JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/2 @HAKCIPTA JKR MALAYSIA 4.5 The sides of all excavation unless otherwise approved by the S.O. shall be cut vertical and where necessary shall be protected against caving in by timbering to the approval of the S.O. If the trench is more than 1.5 m, the contractor shall provide support for the trench to avoid collapse, settlement or movement of the banks. 4.6 The trench excavation shall not advance more than 100 m ahead of the completed backfilled pipeline. Pipe shall be laid in all trenches that have been excavated at the end of each day’s work, unless the Contractor get approval from the S.O. to do otherwise. 4.7 It shall be the responsibility of the Contractor to protect and support all existing water pipes, gas and other conduits crossed by the excavation or work to be performed and to arrange for their temporary removal and subsequent replacement. 4.8 The trench should be excavated precisely to ensure the sewer pipe will be in the centre of the trench. The bottoms of the trenches for all sewers shall be carefully and truly graded, formed and lined according to the grades and dimensions as shown on the Drawings. 4.9 Should the ground be so wet or soft, and does not form a firm base for the pipe, if it is necessary in the opinion of the S.O. then the trench shall be excavated 225 mm below the level intended or shown on the Drawings and then brought to the correct level with good selected earth, quarry dust or sand well rammed into place. Such deepening of pipe trench and filling back shall be treated as a variation under the terms of the Contract. Should the bottom of the trench be inadvertently excavated below the specified level, it shall be brought back at the Contractor's expense to the correct level with good selected earth, quarry dust or sand carefully rammed into place. 4.10 The Contractor shall remove any water which collects in the trenches while sewer pipes are being laid. Water encountered shall be disposed of by the Contractor in a manner satisfactory to the S.O. 4.11 Excess material from the trench excavation shall be located 600 mm (minimum) away from the trench. 4.12 When excavating pipe trenches in roadway or other paved surfaces, the Contractor shall first remove all metal, slabs or bricks forming the existing pavement to the width of the trenches and reinstate to the approval of the S.O. after the trenches have been backfilled. The Contractor must make sure that not more than half of the width of a roadway shall be disrupted at any one time during the sewerage work. 4.13 Generally where rock is encountered in the trench excavation, it shall be removed to the approval of the S.O. Where layer of rock is encountered along the bottom of the excavation, it shall be cut and trimmed to the required level of the trench. All voids formed at the bottom of the trench by the removal of rocks shall be back filled to the required level with Grade 20P concrete or other suitable materials well rammed and compacted all to the approval of the S.O. Uneven surfaces of rocks at the bottom of the excavation due to the trimming shall be levelled and smoothen with sand blinding to the approval of the S.O. 4.14 If the works required pipe jacking, the Contractor shall provide method statement for S.O.’s review and approval. 4.15 The Contractor shall ensure that the work performed is safe and in compliance with Occupational Safety and Health Act (OSHA).
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/3 @HAKCIPTA JKR MALAYSIA 5. Pipes And Fittings 5.1 Generally, all sewer pipes unless otherwise shown on the Drawings, shall be vitrified clay pipes (VCP) and fittings complying with MS 1061 and SPAN guidelines. 5.2 Sewer pipes used for gravity types of sewer shall be a minimum size of 150 mm for service connection and 225 mm for public sewer complying with Malaysian Sewerage Industry Guideline (MSIG). 6. Joint For Sewer Pipes 6.1 Unless otherwise approved by the S.O., joints of flexible and watertight type shall be used on all sewer pipes. The spigot and socket of each pipe shall be cleaned and lubricated before the running of each joint. 6.2 Couplings shall be made either of the same materials as the pipe or other material to the approval of the S.O. The pipes and coupling shall have accurately machined or molded tapered ends, the internal taper of the couplings matching the external taper of the pipes. 7. Pipe Laying 7.1 All pipes shall be laid in compliance with MS 1228 and in accordance with the sizes, locations, dimensions, grades and other particulars as shown in the Drawings. Each pipe shall be carefully inspected upon arrival at site. Sewer pipes shall be carefully stored. Defective pipes shall be marked and removed from the site forthwith. 7.2 Prior to fixing or laying all pipes and fittings shall again be carefully inspect for damage and only those found to be sound in every aspect shall be fixed or laid. Any pipes, specials, et cetera found to be damaged in any way shall be clearly marked, set aside and removed from the site. 7.3 No pipe shall be laid until the trench has been inspected and approved by the S.O. 7.4 The pipes shall be gently lowered into the trench by means approved by the S.O. No pipes shall be rolled or dropped into the trench. The pipe shall be laid true to alignment as shown in the Drawings or as instructed by the S.O. Interior and exterior of each pipe at the joint shall be thoroughly cleaned before the joint is made. Pipes shall be laid from the downstream end towards the upstream end. 7.5 To prevent the entry of earth and other materials into the pipes, the Contractor shall provide and fix suitable stops for efficiently closing all open ends of pipes in the trench while work is not actually being carried out at such open ends. 7.6 Socketed pipes shall be laid with the sockets laid against the direction of flow. At every position of pipe joints, the bedding shall be recessed sufficiently. 7.7 Where sewer pipes are to be laid on concrete bed, haunched or encased in concrete surrounds, these shall be as shown on the Drawings and as specified hereinafter.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/4 @HAKCIPTA JKR MALAYSIA 7.8 The sewer pipes shall be laid to the gradients as shown on the Drawings. Where the gradients are not shown in the drawings, the pipe shall be laid to the following gradients: Size diameter (mm) Gradient 100 1 : 60 150 1 : 80 225 1 : 110 250 1 : 120 300 1 : 140 375 1 : 170 450 1 : 200 7.9 The invert level of each pipe laid shall be checked during laying and immediately after laying as shown on the Drawings. 7.10 Where sewer pipes are laid above ground, they shall be supported at intervals to the details as shown on the Drawings or to the approval of the S.O. 7.11 All external underground sewer pipes shall have a minimum cover of 450 mm unless otherwise shown on the Drawings. 7.12 Clearance between sewer pipes and other services shall be a minimum of 100 mm (vertical and horizontal clearance). 7.13 Other Requirements 7.13.1 For easy identification of underground forced sewer mains, the layout shall be planted with marker posts at every 200 m length and at every change of pipe directions. Valve chambers provided shall have adequate access for operations and maintenance. 7.13.2 There shall be adequate site supervision during the construction. These documents must be submitted before acceptance and approval of construction: (i) Photographs showing sewer pipe laying during and after construction for all lengths. (ii) Testing certificates. (iii) Supervision certificates. (iv) As–built drawings. 8. Bedding, Haunching And Surround 8.1 Concrete bed, haunching and surround shall be of concrete Grade 20P. 8.2 Typical bedding is to be used for all pipes under normal site condition unless directed by the S.O. 8.3 Only approved materials are allowed to be used for pipe embedment. 8.4 The bedding material shall be placed as soon as possible after the base of the trench is prepared and excess water has been removed. 8.5 Whenever the bedding is disturbed, the pipe shall be raised to allow for repair works to be done.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/5 @HAKCIPTA JKR MALAYSIA 8.6 Any pegs or other temporary aids for levelling works shall be removed before any pipe being laid. 9. Connections 9.1 The Contractor is to allow and provide for all bends, junctions, traps, gullies as shown on the Drawings or where necessary. If a gully is used, it shall be of the inlet type, and shall be set level on a concrete base, with a riser to finish 50 mm above the surrounding surface level, complete with concrete surrounds rendered on all sides and galvanized iron grating. Bends turned up to receive various stacks shall be set on concrete bases to the approval of the S.O. The bends at the foot of vertical stacks shall be of gentle radius type. 9.2 All underground fittings shall be completely surrounded in concrete and the Contractor shall allow for any additional excavation and jointing of pipes. 10. Manholes, Inspection Chambers And Valve Chambers 10.1 Manholes, inspection chambers and valve chambers shall be constructed with the sizes shown on the Drawings and MSIG guidelines. Unless otherwise shown or specified, all dimensions on the plan shall be the inside measurement. 10.2 Manholes and inspection chambers shall be protected by lining/coating to prevent corrosion of the concrete due to sulphide attack. Internal walls shall be either rendered with sulphate resistant cement mortar at least 20 mm thick or lined with PVC, HDPE or epoxy coating. 10.3 Manholes 10.3.1 Manhole covers and frames 10.3.1.1 Manhole covers and frames shall comply with Drawings and MSIG guidelines. 10.3.1.2 All surfaces of manhole covers and frames supplied shall be coated as stated in MSIG guidelines with either: (i) Hot applied bituminous material complying with BS 4147 Type I. (ii) Cold applied bituminous material complying with BS 3416 Type II. 10.3.2 Manhole testing (before backfilling) 10.3.2.1 Water-tightness test shall be conducted where no visible leakage shall occur between the manhole cover and its seating in the frame when tested in accordance with MSIG guidelines. 10.3.2.2 A visual inspection shall be conducted on all the external and internal section of each manhole in accordance with MSIG guidelines. Particular attention shall be given to: (i) The slope of benching. (ii) Joints to pipes. (iii) Transitions at entry and exits.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/6 @HAKCIPTA JKR MALAYSIA (iv) Joints in the structure. (v) Quality of concrete finish. (vi) Water-tightness of manhole covers and surround. 10.4 Inspection Chambers Unless otherwise as shown on the Drawings, inspection chambers shall be constructed in brickwork in cement mortar (1:2) and the brickwork shall be of clay bricks and constructed on Grade 20P concrete foundation. The thicknesses and sizes shall be as shown on the Drawings. Each inspection chamber shall have channels and open channel junctions of sizes as shown on the Drawings. Concrete benching shall be to a gradient of 1:6 and shall be of Grade 20P concrete finished with 19 mm steel troweled water proofed cement and sand (1:3) rendering. The internal sides of the inspection chambers shall be lined with 20 mm thick PVC, HDPE or epoxy coating. Externally, the exposed concrete or brick surfaces shall be rendered with 12 mm cement and sand mortar (1:3) and terminated 150 mm below the finished ground level. All internal angles shall be rounded off. Inspection chambers shall be provided with covers and unless specified or as shown on the Drawings, covers shall be medium duty 450 mm x 600 mm cast iron covers with air tight frames. 11. Septic Tank And Sewage Treatment System 11.1 Septic tank and sewage treatment system shall be constructed as shown on the Drawings and to the approval of the S.O. 11.2 All septic tank and sewage treatment system shall be approved only by SPAN. Prefabricated system by the S.P. shall be from the latest Treasury Contract Circular. 11.3 The quality limit for sewage effluent at the discharge point shall comply with Environmental Quality Act (EQA) 1974 or latest. The limit for sewage effluent at the discharge point shall comply with Standard A of EQA as in APPENDIX F/1. 11.4 Sewage Treatment System 11.4.1 Prior to the installation of the sewage treatment system, the Contractor shall submit to the S.O. the system design, drawings, method of statement including structural, foundation, external work and M & E work duly certified by a P.E. registered with the Board of Engineers Malaysia. 11.4.2 Sewage treatment system shall be approved by the Local Authority/Certified Agency before installation at site. 11.4.3 The S.P. shall provide specification on construction and installation of the system and during these periods, the Local Authority/Certified Agency will carry out inspection to ensure the compliance of their requirements. 11.4.4 Upon the completion of the installation of the sewage treatment system and prior to the issuance of the Certificate of Practical Completion, the Contractor shall submit the following documents to the S.O. for information and record: (i) S.P.’s Guarantee against any defects or damages during a period of five (5) years from the date of Certificate of Practical Completion due to any defect, fault or insufficiency in design, material or workmanship or against any other failure which an experienced Contractor may reasonably contemplate but shall not include normal
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/7 @HAKCIPTA JKR MALAYSIA replacement and maintenance. The terms of the Guarantee shall be such as approved by the S.O. (ii) As-built drawings and Operation Manual and Maintenance (OMM) of the sewage treatment system certified by a P.E. registered with the Board of Engineers Malaysia. 12. Connections To The Public Sewerage Line 12.1 Connections to the public sewerage line, if any, shall be strictly carried out in accordance with requirements of the SPAN guidelines and to the approval of the S.O. 13. Testing For Sewer Pipes Installation 13.1 The Contractor shall carry out tests to the sewer pipes installation in accordance with the method of statement and requirements as described hereinafter. The Contractor shall give reasonable notice in writing to the S.O. before such tests to be carried out. 13.2 Testing of pipework shall be carried out and wherever possible, such testing shall be carried out from manhole to manhole. Short branch pipes connected to a main sewer between manholes shall be tested as one system with the main sewer. Long branches and manholes, shall be separately tested. 13.3 Subject to type of pipe and size, pipes shall be subjected to either low water pressure tests, CCTV test or any other test required by the MSIG guidelines and to the approval of the S.O. 13.4 Low Water Pressure Test 13.4.1 The low water pressure test is commonly used for checking the water tightness of the joints and the integrity of the sewer pipes. 13.4.2 For the water test, the pipe shall be subjected to an internal test pressure of 2 m head of water above the crown of the pipe at the higher end but not more than 7 m at the lower end. Steeply graded pipe shall be tested in such a manner that the above maximum heads is not exceeded. 13.4.3 The test shall be carried out by filling the sewer with water slowly to the required head and bleed air from behind the upstream plugs. Maintain the water head for two (2) hours. Top up the water as required. 13.4.4 Check the leakage at the plugs and the test apparatus during the pressurizing period and the constant pressure holding period. Release the water pressure if leakage occurs. Make the necessary repairs and adjustments before pressurizing again. 13.4.5 Commence the test immediately after the last adjustment of water head in the preceding two (2) hours period. 13.4.6 Add water to maintain the starting water head every five (5) minutes during the test period of 30 minutes. Record the total amount of water required for readjustment.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/8 @HAKCIPTA JKR MALAYSIA 13.4.7 The test is considered pass when: (i) The loss of water does not exceed 1 litre per hour linear meter per meter internal diameter for VCP and reinforced concrete pipes. (ii) There shall be no loss of water for pipe other than VCP and reinforced concrete pipes. (iii) There is no visible leakage at the joints for all pipe types. 13.5 Closed-circuit Television (CCTV) Testing (if required) 13.5.1 General CCTV inspection where required shall be carried out to enable detection of sewer defects such as cracks, deformations, collapse, dislocation and et cetera which are not detected by normal means. 13.5.2 Inspection requirements 13.5.2.1 A CCTV Inspection Contractor registered with SPAN shall be appointed to carry out the inspection works. 13.5.2.2 General inspection coverage Initial CCTV testing and inspection shall be conducted for a minimum 10% random selection of sewer pipes including all manholes and connections in accordance with SPAN guidelines. 13.5.2.3 High risk areas (i) 100% CCTV inspection shall be conducted for sewer pipes including manholes laid in the ground with high risk of failure and having the following characteristics: a) Crossing under buildings, roads, railway, rivers and lakes including their reserve. b) Crossing using pipe jacking method and horizontal drilling method. 13.5.3 Witness Witness from the SPAN, S.O., consultant and contractor responsible for the construction of sewer shall be present during CCTV inspection. 13.5.4 Documentation 13.5.4.1 Within 7 days after completion of the inspection, the Contractor shall submit to the S.O. the following: (i) Two (2) copies of digital records; and (ii) One (1) copy of hardcopy report and recommendation 13.5.4.2 The format of the report and documentation shall be in accordance with MSIG guidelines. All documents shall be certified and duly signed by the qualified person responsible for the CCTV inspection declaring the authenticity of the recording submitted and done in accordance with the procedure stated in MSIG guidelines.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/9 @HAKCIPTA JKR MALAYSIA 13.5.5 During Defects Liability Period If any blockages, damages, seepages occur to the sewer networks during the Defects Liability Period, the S.O. may require the Contractor to carry out further CCTV inspection to determine the cause within 24 hours. 14. Backfilling 14.1 After the pipes have been tested and approved, the trench shall be backfilled with approved fill material, free from rock and other hard material, well compacted around the pipes up to a level of at least 300 mm above the top of the pipes. After this has been approved, the remaining excavation shall be backfilled in 300 mm layers, each layer being well compacted. The bedding details and the types of fill material shall in accordance to Drawings and MSIG guidelines. 14.2 Trench support shall be progressively removed during the backfill work. 14.3 There shall be at least 300 mm of cover over the sewer pipe before light mechanical compaction can commence. 14.4 There shall be at least 1000 mm of cover (depth of backfill) over the sewer before heavy mechanical compaction can commence.
JKR MALAYSIA SECTION F : SEWERAGE WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 F/10 @HAKCIPTA JKR MALAYSIA APPENDIX F/1 TABLE F1: PARAMETER LIMITS FOR SEWAGE AND INDUSTRIAL EFFLUENTS Parameter Effluent discharge to rivers/stream Effluent discharge to stagnant water bodies* Standard A Standard B Standard A Standard B Absolute Design Absolute Design Absolute Design Absolute Design BOD5 20 10 50 20 20 10 50 20 SS 50 20 100 40 50 20 100 40 COD 120 60 200 100 120 60 200 100 AMN 10 5 20 10 5 2 5 2 Nitrate Nitrogen 20 10 50 20 10 5 10 5 Total Phosphorus N/A N/A N/A N/A 5 5 10 5 O&G 5 2 10 5 5 2 10 5 Notes : 1) N/A = not applicable 2) All values in mg/l unless otherwise stated 3) *Stagnant water bodies refer to enclosed water bodies such as lakes, ponds and slow moving watercourses where dead zone occur 4) A : Discharge upstream of water supply sources 5) B : Discharge downstream of water supply sources
TABLE OF CONTENTS SECTION G : ROOFING WORKS PAGE @HAKCIPTA JKR MALAYSIA 1. General 2. Interlocking Concrete Tiles 3. Clay Tiles 4. Pre-painted Aluminium Roofing Sheet 5. Concrete Flat Roofs 6. Pre-painted Steel Roofing Sheet 7. Roofing Sheet For Marine Environment (Coastal Areas) 8. Bituminous Corrugated Roofing Sheets 9. Bituminous Corrugated Roofing Tiles 10. Fibre-cement Corrugated Sheets 11. Heat Insulation G/1 G/1 G/1 G/1 G/1 G/2 G/4 G/5 G/5 G/5 G/6
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/1 @HAKCIPTA JKR MALAYSIA 1. General 1.1 Unless otherwise stated, the pitch and laps for each type of roof covering shall be strictly in accordance with the manufacturer’s recommendation. 1.2 Unless otherwise approved, all roof covering pieces or accessories such as eaves, hips, ridges, valley et cetera, shall be of the same material as the general covering. 2. Interlocking Concrete Tiles 2.1 Interlocking concrete roof tiles shall be laid on timber or steel battens approved for roofing at spacing and tightly nailed or screwed as recommended by the manufacturer. 2.2 Unless otherwise specified, the concrete roof tiles shall be laid to slope in accordance to the manufacturer’s recommended pitch and to the S.O’s approval. The roof tiles shall conform to MS 797 and unless otherwise specified on the Drawings, it shall be laid on metal trusses system to engineer’s detail and S.O’s approval. 2.3 Tiling fillers consisting of 1:3 cement mortar as specified under SECTION E: NONSTRUCTURAL WALL SYSTEM, shall be provided at the feet of the rafters. 2.4 Verges, ridges, hips, valley tiles and complete with all roofing accessories shall be provided and laid to bond with the general roof tiling works in accordance with the manufacturer’s recommendation. 3. Clay Tiles 3.1 Unless otherwise stated in the Drawings, clay tiles shall be of 470 mm (length) x 284 mm (horizontal width) pattern confirming to BS 402 and shall be free from cracks, chips and warps. 3.2 Clay tiles shall be laid with a minimum head lap of 95mm on timber or steel battens approved for roofing at spacing as recommended by the tile manufacturer. The tiles shall be firmly screwed or nailed at intervals as recommended by the roofing tile manufacturer and as approved by the S.O. 3.3 Ridge capping, hip and valley tiles complete with all roofing accessories shall be provided to match the general tiling works in accordance with the manufacturer’s recommendation. All these shall be bedded in matching 1:3 coloured cement mortar. 4. Pre-painted Aluminium Roofing Sheet Unless otherwise stated, where aluminium roofing sheets are to be used, they shall be of the type, gauge and finish as shown in the Drawings and to be fixed strictly in accordance with the manufacturer’s recommendation. 5. Concrete Flat Roofs Concrete flat roofs shall be as specified under SECTION D: CONCRETE WORKS.
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/2 @HAKCIPTA JKR MALAYSIA 6. Pre-painted Steel Roofing Sheet 6.1 Unless otherwise stated, the metal roof decks shall comply with the following: 6.1.1 Materials 6.1.1.1 The roofing sheets shall be produced from aluminium/zinc alloy coated steel conforming to MS 1196: “Continous Hot-Dip Aluminium/Zinc Coated Steel Sheet of Commercial, Drawing and Structural Qualities” and AS 1397 “Steel Sheet and Strip-: Hot-Dip Zinc Coated or Aluminium/Zinc Coated”. 6.1.1.2 The pre-painted finish over the aluminium/zinc alloy coated base steel shall conform to MS 2383: “Prefinished/Pre-painted Sheet Metal Products for Interior/Exterior Building Applications - Performance Requirements” and AS/NZS 2728: “Prefinished/Pre-painted Sheet Metal Products for Interior/Exterior Building Applications - Performance Requirements”. 6.1.1.3 The exterior finish coat shall have a nominal film thickness of 20 µm over 5 µm thick corrosion inhibitive primer on top side or weather side. The backing coat shall be with nominal film thickness of 5 µm over 5 µm corrosion inhibitive primer. 6.1.1.4 Minimum steel yield strength shall be 550 MPa. 6.1.1.5 Minimum aluminium/zinc alloy coating mass shall be 150 g/m² (Coating Class AZ 150) on both surfaces conforming to ISO 9223 Category 3 (C3) environment. 6.1.1.6 The Contractor shall submit material warranty from the manufacturer in accordance with ISO 9223: “Corrosion of Metals and Alloys – Corrosivity of Atmosphere - Classification” of the project site and the format approved by the S.O. Material warranty shall be up to 25 years against perforation by corrosion, 15 years against flake and peel, 10 years against colour fading and 5 years against dirt staining. 6.1.1.7 The Contractor shall submit shop drawings for the S.O’s approval prior to commencement of installation works. 6.1.2 Metal sheet profiles 6.1.2.1 Unless otherwise specified or shown in the Drawings, the metal sheet profile shall be of a concealed fixing system as approved by the S.O. The roofing sheets shall have the following minimum requirements: (i) Base Metal Thickness (BMT) = 0.42 mm. (ii) Cover width = 680 mm. (iii) Rib height = 40 mm. (iv) Coating = Pre-painted aluminium and zinc coated steel with AZ150 (150 g/m²) on both surfaces.
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/3 @HAKCIPTA JKR MALAYSIA 6.1.2.2 Where pierced fixing system is specified or shown in the Drawings, the roofing sheet shall have the following minimum requirements: (i) Base Metal Thickness (BMT) = 0.42 mm. (ii) Cover width = 750 mm (iii) Rib height = 38 mm (iv) Coating = Pre-painted aluminium/zinc coated steel with AZ150 (150 g/m²) on both surfaces. 6.1.3 Fixing 6.1.3.1 Installation procedures shall conform to the recommendation of the manufacturer. 6.1.3.2 The roofing sheets shall be installed and fixed according to the following method: (i) Concealed fixing using approved clips compatible with the roofing sheet. (ii) Pierced fixing using approved fasteners compatible with the roofing sheet. 6.1.3.3 The roofing installer shall be registered with CIDB. 6.1.3.4 Metallic swarf and all other debris including nail, screws, mortar, construction materials et cetera shall be swept away from the roof area and gutters regularly, particularly at the end of each day’s work and at completion of the installation works. 6.1.4 Clips and fasteners 6.1.4.1 Fasteners type shall comply with AS 3566 Class 3 and be certified as such by the supplier of fasteners. 6.1.4.2 The recommended type of fasteners shall conform to the following test: (i) Salt spray test - 1000 hours (ii) Kesternich test - 15 cycles. (iii) Humidity test - 1000 hours. (iv) UV test - 2000 hours. 6.1.4.3 All fasteners and screws shall be of the self-drilling type either concealed or screwed fixing, complete with preassembled ethylene propylene diene monomer (EPDM) rubber washers. 6.1.5 Flashing and capping Approved 0.42 mm BMT ridge capping, flashing, capping and trimming shall be manufactured to the required shape and sizes. The flashing and capping materials used shall be from the same material as the roofing sheets. 6.1.6 Sealants Only neutral cure silicone rubber sealant type Dow Corning 780 or equivalent shall be used conforming to AS 3902.
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/4 @HAKCIPTA JKR MALAYSIA 6.1.7 Lightning conductors Aluminium lightning conductor is recommended for use on steel roof system. 6.2 All fixing accessories shall be rust-resistant and of suitable design and construction as recommended by the manufacturer for the roofing system and as approved by the S.O. All fasteners and screws shall be of the self-drilling type either concealed or screwed fixing, complete with preassembled EPDM rubber washers. 6.3 Identification, storage and packaging of alum/zinc steel roof decking shall be strictly in accordance with the manufacturer’s recommendation and comply with the S.O.’s requirements. 6.4 All roof decking sheets, capping, flashing et cetera or wall cladding shall be new, clean, regular, straight and true to shape with sharp defined profiles, free from cracks, chips, bends and defects detrimental to practical use or from other surface imperfections. 6.5 At Site, the sheets shall be lifted from the transport carrier by a crane and properly stacked clear of the ground, ready to be lifted up to the roof structure for laying. Where sheets are to be manually lifted, care should be taken not drag the sheets to avoid scraping away the surface coating. 6.6 Where storage is necessary, stack heights shall be kept to a minimum and the sheets shall be stacked in a sloping position. Sheets shall be stacked off a dry firm ground, under cover by tarpaulin or polythene sheets but ventilated and away from building operations. Should the stack sheets become wet, they shall be immediately dried to prevent staining and degradation of the surface coatings. 6.7 The Contractor shall be responsible for the absolute water-tightness of the roof and must ensure that the method of installation, fixing and fastening decking sheets, caps, flashings et cetera including acoustical, insulation and expansion joints, whenever required shall conform strictly to the manufacturer’s recommendation. 6.8 The completed portions of the roof shall be clear of all metallic particles such as blind rivet shanks, screws, nuts, nails et cetera and dirty foot prints should be wiped off to avoid early deterioration/corrosion and discolouration. Damages to the coating shall be repaired with touch-up paint as recommended by the manufacturer and approved by the S.O. 7. Roofing Sheet For Marine Environment (Coastal Areas) 7.1 The Contractor shall select the correct type of metal sheet profile to be installed for coastal areas as recommended by the roof manufacturer and approved by the S.O. 7.2 Unless otherwise specified or shown in the Drawings, the roofing sheet for marine environment shall be metallic coated steel with minimum aluminium/zinc alloy coating mass of 200 g/m² (Coating Class AZ 200) on both surfaces conforming to ISO 9223 Category 4 (C4) and Category 5 (C5) environment. 7.3 Metallic coated steel shall be manufactured and certified by SIRIM according to MS 1196 ‘Continuous Hot-Dip Aluminium/Zinc Coated Steel Sheet of Commercial, Drawing and Structural Qualities’ or AS 1397 ‘Steel Sheet and Strip: Hot-Dip Zinc Coated or Aluminium/Zinc Coated’. 7.4 The pre-painted finish (super polyester paint) type shall be used over the aluminium/zinc alloy coated base steel shall conform to MS 2383: “Prefinished/Pre-
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/5 @HAKCIPTA JKR MALAYSIA painted Sheet Metal Products for Interior/Exterior Building Applications - Performance Requirements” and AS/NZS 2728: “Prefinished/Pre-painted Sheet Metal Products for Interior/Exterior Building Applications - Performance Requirements” 7.5 Fasteners used shall comply with AS 3566 Class 4 and be certified as such by the supplier of fasteners and to the approval of the S.O. 7.6 All fixings and associated components shall be manufactured from compatible metals and coated conforming to ISO 9223 Category 4 (C4) and Category 5 (C5) environment. Flashings shall be made from the same material as the roofing sheets. 8. Bituminous Corrugated Roofing Sheets 8.1 Unless otherwise shown on the Drawing, the bituminous corrugated roofing sheets shall have the following minimum requirements: (i) Length = 2000 mm (ii) Width = 950 mm (iii) Cover width = 855 mm (iv) Thickness = 3 mm (v) Weight of material = 3.3 kg/m2 (vi) Thermal resistance R- value = 0.04 mK/W (vii) Thermal conductivity = 0.066 W/mk 8.2 Unless otherwise shown on the Drawings, the Bituminous Corrugated Roofing Sheets shall be laid at a minimum roof pitch of 5° on timber battens at spacing and tightly nailed/screwed as recommended by the manufacturer. 8.3 Ridge capping, nails and screws shall be provided to match the roofing sheets while ridges, verges, eaves, hips, valleys, side-wall and end-wall details shall be fixed strictly in accordance with the manufacturer’s recommendation. 9. Bituminous Corrugated Roofing Tiles 9.1 Unless otherwise shown on the Drawing, the bituminous corrugated roofing tiles shall have the following minimum requirements: (i) Length = 1060 mm (ii) Width = 400 mm (iii) Wave height = 40 mm (iv) Thickness = 3 mm 9.2 Bituminous roofing tiles shall be laid at a minimum roof pitch of 9° and on timber or steel battens approved for roofing at spacing and tightly nailed/screwed as recommended by the manufacturer. 9.3 Ridge capping, nails and screws shall be provided to match the roofing tiles while ridges, verges, eaves, hips, valleys, side-wall and end-wall details shall be fixed strictly in accordance with the manufacturer’s recommendations. 10. Fibre-cement Corrugated Sheets 10.1 Fibre-cement corrugated sheets shall comply with MS 1224. The thickness of the sheets shall be 3 mm thick for shallow corrugation and 4 mm thick for medium
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/6 @HAKCIPTA JKR MALAYSIA corrugation. The cement shall comply with MS 522: Part 1. Asbestos processed or unprocessed shall not be added to fibre-cement sheets. 10.2 The surface intended to be exposed to the weather shall have a generally smooth finish. Variations of the surface appearance which do not impair the characteristics of the sheets as defined in MS 1224 are permitted. 11. Heat Insulation 11.1 General Heat insulation system shall comply with MS 1020. Samples of the insulation material shall be submitted to the S.O for approval before they are used and subsequent delivery shall be up to the standard of samples approved. 11.2 Reflective Foil 11.2.1 Reflective foil shall be fire retardant double sided aluminium reflective foil bonded to reinforced high density polyethylene woven fabric. 11.2.2 The reflective foil materials used shall conform to fire safety requirements and BS 476: Fire Test on Building Materials and Structures on the following test: (i) Non-combustibility test for materials. (ii) Method of test for fire propagation for products. (iii) Method of test to determine the classification of the surface spread of flame. 11.2.3 Reflective foil properties shall conform to the following: (i) Thickness : 137 ± 20 micron thick. (ii) Grammage : 163 ± 10g / m2 . (iii) Tensile strength : 500 N / 50 mm (MD), 500 N / 50 mm (Cross Direction). (iv) Emissivity ASTM E408 ≤ 0.05(97±2%) / Reflectivity = 95% (v) Initial Tear resistance: ASTM D1004 >30N (vi) Tear Propagation: DIN53363 > 600 N/mm (CD) / 800 N/mm (MD) 11.2.4 Reflective foil material may be used on its own with all types of roofs except with metal decking roof. Where roof is of metal decking, the reflective insulation material shall be laid below stone wool or glass wool for effective thermal and acoustic performance. 11.2.5 The reflective foil material shall be installed strictly in accordance with the manufacturer’s recommendation. A uniform air space of 20 mm between the tile roof covering and the insulation material shall be provided to ensure the effectiveness of the reflective surface. All punctures shall be effectively sealed with similar reflective material to prevent air leakage and moisture transfer. 11.2.6 The reflective foil surface shall be free from any thin film of oil, plastic or lacquer coatings. All dust and/or moisture, if any, shall be thoroughly cleaned prior to installation. All dust and/or trademarks shall be limited to a maximum of 5% of the total reflective area. The insulation material shall be fitted closely around electrical outlet boxes, plumbing and et cetera, and taped securely to eliminate gaps or voids through which air or water vapour might pass into the cooler space.
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/7 @HAKCIPTA JKR MALAYSIA 11.3 Glass Wool Insulation 11.3.1 Unless otherwise shown in the Drawings, glass wool insulation shall be 75 mm thick. It shall have R-Value @ R2.0 m²KW (tested at a mean temperature of 20°C based MS1020 tested according to ASTM C177/C518). The glass wool insulation material used shall conform to BS 476 for Fire tests on building materials and structures on the following: (i) Non-combustibility test for materials. (ii) Method of test for fire propagation for products. (iii) Method of test to determine the classification of the surface spread of flame. 11.3.2 The glass wool insulation material used shall be of no added urea formaldehyde and as approved by the S.O. Glass wool insulation shall be fixed in accordance with the manufacturer’s recommendations and to the approval of the S.O. 11.3.3 Where single skin metal roof is applied, galvanized wire mesh BRC 3316 or equivalent shall be used to support the reflective foil and the glass wool insulation. 11.4 Stone Wool Insulation 11.4.1 Unless otherwise shown in the Drawings, stone wool insulation shall be 50 mm thick minimum. It shall have R-Value @ R2.0 m²KW (tested at a mean temperature of 20°C based MS1020 tested according to ASTM C177/C518). The stone wool insulation material used shall conform to BS 476 for Fire tests on building materials and structures on the following: (i) Non-combustibility test for materials. (ii) Method of test for fire propagation for products. (iii) Method of test to determine the classification of the surface spread of flame. 11.4.4 The stone wool insulation shall conform to the following: (i) Thermal conductivity 0.034 - 0.036 W/mK at 20°C mean temperature tested in accordance to ASTM C518. (ii) Noise reduction coefficients (NRC) of up to 1.0 tested to BS EN ISO 354 at 50 mm thickness. (iii) Non-combustible according to BS 476 Part 4 or EN 13501-1 and melting point of at least 1000°C in accordance to ASTM E794. (iv) No CFCs, HFCs, HCFCs or asbestos shall be used in the manufacture of the product. (v) No perceptible odor shall be present when tested in accordance to ASTM C665. (vi) Not sustaining fungus growth under normal conditions according to ASTM C1338. (vii) The metal plates (steel and aluminium) in contact with the insulation shall show no corrosion greater than that observed on the comparative plates in contact with sterile cotton according to ASTM C665. (viii) Flame spread index less than zero (0) and smoke developed index less than five (5) according to ASTM E84. (ix) Total volatile organic compound (VOC) emission shall be less than 0.25 mg/m3 and particles emission shall be less than 0.02 mg/m3 tested according to ASTM D5116. (x) Moisture absorption shall be less than or equal to 0.04 % volume according to ASTM C1104/C1104M and water absorption shall be less
JKR MALAYSIA SECTION G : ROOFING WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 G/8 @HAKCIPTA JKR MALAYSIA than or equal to 0.5 kg/m² (short-term immersion) according to EN 1609. 11.4.3 The stone wool insulation material used shall be of no added urea formaldehyde and as approved by the S.O. Stone wool insulation shall be fixed in accordance with the manufacturer’s recommendation and to the approval of the S.O. 11.4.4 The insulation material must be protected from the exposure of rain, water immersion and chemical contamination during the storage and installation. If the insulation are in contact with water, adequate drying time must be allowed to ensure that the insulation are completely dried prior to covering of the roof covers. 11.4.5 The stone wool insulation shall be installed to the thickness specified and place butt jointed. Wherever possible the Contractor shall avoid the compression of the insulation material. 11.4.6 Where single skin metal roof is applied, galvanized wire mesh BRC 3316 or equivalent shall be used to support the reflective foil and the stone wool insulation.
TABLE OF CONTENTS SECTION H: TIMBER, JOINERY AND IRONMONGERY WORKS PAGE @HAKCIPTA JKR MALAYSIA 1. General 2. Timber Grades And Size Tolerances 3. Treatment Of Timber 4. Moisture Content And Storage 5. Structural Assemblies Of Timber 6. Timber Joints 7. Prefabricated Timber Roof Truss System 8. Glued Laminated Timber For Structures 9. Carpentry Works 10. Joinery Works 11. Timber Floor Finish 12. Ceiling Timber Battens 13. Timber Partitions 14. Fascia And Barge Boards 15. External Boarding 16. Staircase And Balustrades 17. Timber Solid Panel Doors 18. PVC Doors 19. Products And Materials 20. Ironmongery 21. Built-in Furniture TABLE H1 : Schedule Of Timber Grouping And Usage TABLE H2 : Schedule Of Timber Species In Accordance With Strength Grouping (S.G) TABLE H3 : Schedule Of Moisture Contents (M.C) Of Timber For Various Positions In Building TABLE H4 : Natural Durability Classification Of Peninsular Malaysia Timbers For Ground Contact TABLE H5 : Natural Durability Classification Of Sarawak Timbers For Ground Contact TABLE H6 : Properties Of Malaysian Timber TABLE H7 : Schedule Of Ironmongery TABLE H8 : Timber Species For The Manufacturing Of Glued Laminated Timber Components APPENDIX H/1 : Glued Laminated Timber Performance Warranty (Specimen) H/1 H/1 H/1 H/3 H/3 H/4 H/5 H/7 H/12 H/13 H/13 H/13 H/14 H/14 H/14 H/14 H/15 H/15 H/15 H/17 H/17 H/20 H/21 H/22 H/23 H/24 H/25 H/26 H/28 H/29
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/1 @HAKCIPTA JKR MALAYSIA 1. General 1.1 Unless otherwise specified or shown in the Drawings, the timber species used for the Works shall be as stated hereinafter in the TABLE H1. The strength grouping for timber shall be in accordance with MS 544 as shown hereinafter in the TABLE H2. 1.2 All carpentry and joinery work shall include all necessary notching, halving, morticing and tenoning, wedging, scarfing, dovetailing, sinking for heads of bolts and nuts and trimming for opening. 1.3 All carpentry work shall be left with a sawn surface except where particularly described to be wrot. All joinery shall be wrot and finished with sand paper as required and all sizes stated are the finished sizes. Sizes for carpentry shall be within the tolerances stated in sub-section 2.1 and sizes for joinery shall be within the tolerances stated in sub-section 2.2. 1.4 Unless otherwise indicated in the Drawings, all fire protection materials and systems must show evidence that they have been subjected to the fire resistance test in accordance with BS 476 or other approved equivalent standards. 2. Timber Grades And Size Tolerances 2.1 Unless otherwise specified, sawn timber for carpentry work shall be as stated hereunder: (i) Select Grade - for roof truss (ii) Standard Structural Grade - for structural work (iii) Sound Grade - for General Market Specification (GMS) and strips (iv) Serviceable Grade - for scantling 2.2 Grading shall be carried in accordance with the Malaysian Grading Rules (MGR) by timber graders registered with the MTIB. Every timber consignment shall be accompanied by the Grading Summary certified by the registered timber grader. The sizes of sawn timber, except where otherwise specified, shall be within the margin of permissible variations stated hereunder: (i) For widths, depths or thicknesses not exceeding 75 mm - within 3 mm of the specified size (ii) For widths, depths or thicknesses exceeding 75 mm - within 5 mm of the specified size. 2.3 The Contractor shall provide any necessary blocks, wedges or battens to compensate for irregular surfaces caused by any variations in size of timbers hereby permitted. 2.4 Unless otherwise specified, sawn timber for joinery work shall be of Sound Grade (General Market Specification (GMS) and Strips) and Serviceable Grade (Scantlings). The finished size for joinery, unless otherwise specified, shall be within the margin of permissible variation stated hereunder: (i) For widths, within 3 mm of the specified finished size. (ii) For thicknesses, within 2 mm of the specified finished size. 3. Treatment Of Timber 3.1 All timber except the heartwood of the naturally durable timbers as scheduled in TABLE H2 hereinafter and timber for formwork, scaffolding, and other temporary
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/2 @HAKCIPTA JKR MALAYSIA works shall be impregnated by means of vacuum pressure processes in accordance with MS 360 using copper/chrome/arsenic (CCA) wood preservatives conforming to MS 733 in the treatment plant registered with the MTIB. 3.2 If a timber component has sufficient natural resistance to decay and insect attack by virtue of the natural durability of its heartwood, it may be used without treatment even where the hazard exists. The natural durability classification of Peninsular Malaysia and Sabah and Sarawak timbers for ground contacts can be found in MS 360 and as shown in TABLE H4 and TABLE H5. Sapwood should not be used without preservative treatment 3.3 Unless otherwise specified, the average moisture content for all timber shall not exceed 25% in accordance with MS 360. The moisture content shall be determined in accordance with one of the methods given in MS 837. 3.4 All timber shall be sawn or planed before treatment to achieve the finished crosssection required. As far as possible, all cross-cutting, boring, drilling or other processing should be carried out before treatment. 3.5 The pH value of the treating solution shall not be higher than 3.0 when determined by a glass electrode or pH paper at ambient temperature in accordance with MS 360. 3.6 The net dry salt retention shall be determined in accordance with one of the methods given in MS 360 and MS 821. The minimum salt penetration shall be determined by one the test methods given in MS 833. 3.7 The material shall be collected by drilling to the required depth as recommended and shown in MS 360 -TABLE 4. It can also be collected by sawing to the required depths, and then chipped to the small size. Either sawdust or chipped materials shall be ground to fine powder. 3.7.1 The minimum nett dry salt retention for CCA shall be as shown in the table below: No Use Minimum Net Dry Salt Retention For CCA i) Interior and above the ground 5.6 kg/m³ ii) Exterior and above the ground 8.0 kg/m³ iii) Exterior and in contact with the ground (other than foundation piles) 12.0 kg/m³ 3.7.2 All sapwood shall be fully penetrated by the preservative and for heartwood, the depth of penetration shall be 12 mm. 3.8 The Contractor, when required by the S.O. shall produce a certificate from a preservative treatment plant which certifies that timber required to be impregnated by means of vacuum pressure processes has been impregnated and has achieved the necessary nett dry salt retention. Notwithstanding the certificate, the S.O. reserves the right to carry out independent tests to determine the nett dry salt retention and the result so obtained shall be conclusive.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/3 @HAKCIPTA JKR MALAYSIA 3.8.1 Treatment certificate 3.8.1.1 A treatment certificate shall be produced for each batch of timber delivered from the treatment plant. The relevant charge sheets shall be attached with each treatment certificate. The following information shall appear on the certificate: (i) name and address of buyer; (ii) project title/reference; (iii) name of treating company; (iv) name of preservative(s) used; (v) average retention of preservative obtained; (vi) charge sheet number and date of treatment; (vii) species of timber treated together with sizes and volume; (viii) commodity and hazard class; and (ix) other registration number (where applicable) 3.8.1.2 The certificate shall be signed by authorized personnel of the treating company, certifying that the timber has been treated in accordance with MS 360. 4. Moisture Content And Storage 4.1 At the time of installation, the moisture content of the timber for the various applications shall not exceed that as specified in TABLE H3. 4.2 Moisture content for foundation piles, formworks and temporary works is not critical for these applications and therefore is not specified. 4.3 Moisture content of timber shall be determined in accordance with MS 837. 4.4 On delivery to the site, all timber other than timber for foundation piles, formworks and temporary works shall be properly open-stacked, under cover. Kiln dried timber shall be properly wrapped and stored under cover if it is not used immediately. 5. Structural Assemblies Of Timber 5.1 The workmanship and method of assembly of structural timber shall generally be in accordance with MS 544 and in particular, the following requirements: (i) The quality of the surface, as finished, shall be appropriate to the position and use of the timber. (ii) When grade or other necessary marks are removed, provisions shall be made for remarking in accordance with Malaysian Grading Rules. Surfaces at any joint in an assembly shall be such that the parts may be brought into contact over the whole area of the joint before connectors are inserted or any pressure or restraint from the fastening is applied. These surfaces shall have a good sawn or planed finish. (iii) Bearing surfaces of notches and other cuttings shall be true and smooth and in appropriate relation to the other surfaces of the piece. 5.2 Notches other than at the ends of beams shall be U-shaped formed by parallel cuts to previously drilled holes. The diameter of the hole shall be equal to the width of the required notch.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/4 @HAKCIPTA JKR MALAYSIA 5.3 Where splitting is likely to have a deleterious effect, end sealing is recommended. For timbers known to split and check especially after installation, the ends of the boards and scantlings shall be protected with a coating designed to minimise end checking and checking and splitting. In severe cases where the ends and sides of heavy joists of timbers are liable to excessive split and check due to exposure to windward slanting sunlight, appropriate skirting or cover with a thin timber board shall be necessary. 6. Timber Joints 6.1 When solid timber members are to be jointed together using mechanical fasteners, the workmanship and method of assembly shall be in accordance with MS 544 Part 5. The mechanical fasteners are as listed below: 6.1.1 Nailed joint Where necessary to avoid splitting, nails shall be driven into pre-drilled holes or diameter not greater than four-fifths of the diameter of the nails. Care shall be taken to avoid placing nails in any end split. 6.1.2 Screwed joint Lead holes shall be used to ensure good workmanship in making screwed joints. The diameter of the hole for the shank shall be equal to the diameter of the shank, and for the threaded portion, the diameter of the hole shall not be greater than seven-eighth of the diameter of the root diameter of the screw thread adjacent to the shank. Care shall be taken to avoid placing screws in any end split. 6.1.3 Bolted joint 6.1.3.1 Bolt holes shall be drilled to diameters as close as possible to the nominal diameter of the bolt and in no case more than 2 mm larger than the bolt diameter. Care shall be taken to avoid placing a bolt in any end split. A minimum of one complete thread shall protrude from the nut. 6.1.3.2 A washer shall be fitted under the head of each bolt and under each nut. The minimum sizes of washers are as given in Part 6 of MS 544. Where joints using split-rings are to be used, as shown in the Drawings, the members of the joints shall be fitted together in their appropriate positions and clamped or spiked together before drilling. Alternatively, drilling jigs or multiple head boring machines may be used, or individual members may be marked out from the setting-out or by use of prepared templates. 6.1.3.3 If either of the latter methods is employed, sample members (usually the first ones produced) shall be carefully checked against the setting-out. 6.1.3.4 In all instances holes for bolt positions shall be accurately determined by reference to the point intersection of the centre lines of the member. Great care is necessary if the first set members marked out is to be used subsequently as drilling templates. Greater accuracy can usually be obtained by the use of special marking or drilling templates located by a pin at the intersection of the center lines.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/5 @HAKCIPTA JKR MALAYSIA 6.1.3.5 Bolts holes shall be drilled at right angles to the surface of the joint. The contact surfaces of the members should be grooved to the appropriate dimensions as given in Part 6 of MS 544. 6.1.3.6 Drilling and grooving may be done in a single operation; alternatively, if the hole is predrilled the pilot of the grooving tool shall fit in the bolt hole, thus centering the groove about the hole. 6.1.3.7 Care shall be taken to ensure that all chips and shavings are removed, and rings shall be expanded before being placed in the grooves. 6.1.3.8 The joint shall be finally assembled and bolts inserted. Washers of the correct dimension shall be placed under the head of the bolt and the nut, and the nut tightened to hold the members together. 6.1.3.9 Recess for shear-plate connectors shall be accurately cut by means of a suitable tool to be appropriate dimensions as given in MS 544 - Part 6. 6.1.3.10 Assembly of units shall be done on a level bed and in such a way as to avoid damage to any of the members and so that the finished structural units conform to detailed Drawings and specification supplied. 6.1.3.11 When assembly is to be performed on the site, one set of component parts shall be fitted together and dismantled prior to dispatch to the site, in order to ensure that the assembled structural units conform to the detailed Drawings and Specifications. Twisted or damaged members shall be replaced before erection on the site. 6.1.3.12 Before proceeding with bulk production, a complete assembly of one of each framed truss or other structural unit shall be checked to prove the accuracy of the templates, et cetera A similar check shall be carried out from time to time to control the wear and tear on templates and gauges. 6.1.3.13 Timber members and built-up units shall be marked in accordance with a marking diagram. 7. Prefabricated Timber Roof Truss System 7.1 All prefabricated components shall be manufactured only by reputable licensed truss suppliers and approved by the S.O. This supplier duly termed as ‘System Provider’ is responsible for the analysis, design, detailing, drawing, manufacture, material, handling and erection of the roof members, and their ancillary fixing components. The full requirement is outlined in the Specification for Prefabricated Timber Roof Trusses (JKR 20601-0190-12) or the latest edition published by JKR. 7.2 System Provider 7.2.1 The System Provider (S.P.) is a supplier of a proprietary roof truss system appointed by the Contractor and approved by the S.O., which employs Quality Assurance procedures in the design, detailing, connection, bracing,
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/6 @HAKCIPTA JKR MALAYSIA erection criteria and manufacture of truss components for the structural roof truss system. 7.3 Duties Of Professional Engineer 7.3.1 The S.P. shall appoint a Professional Engineer (P.E.) whose duties shall include the following: (i) Preparation of roof truss analysis and design; (ii) Preparation of drawings; (iii) Design changes in every stage of work; (iv) Certification for completion of roof truss installation; (v) Final certification for roof truss installation prior to issuance of Certificate of Practical Completion for the whole Works to the Contractor. 7.4 Fabricator All trusses shall only be assembled by licensed fabricators approved by the S.P. and registered with CIDB. A copy of the CIDB registration certificate shall be submitted to the S.O. for verification. 7.5 Installer All installation works shall be executed and supervised by qualified personnel with valid certificates issued by CIDB. The S.O. shall verify the identification and qualification of the installer prior to the installation. 7.6 General Truss Limitation 7.6.1 Prior to any pre fabricated timber roof trusses works, the following general limitation shall be applied: (i) Maximum unsupported truss span 12 m with permitted deviation of ±0.05 m. (ii) Maximum truss spacing of 1.2 m with permitted deviation of ±0.025 m. (iii) The minimum basic wind speed shall be 35 m/s. However, the minimum basic wind speed shall be increased to 41 m/s for lightweight roof covering. (iv) Maximum roof pitch shall be of 45˚. 7.7 Analysis, Design Report And Drawings Submission 7.7.1 The S.P. through the Contractor shall propose to the S.O. or his approval a roof truss system which is safe, functional and conforming to design standard. Submission of proposal shall include truss analysis, design report, and construction drawings. The truss analysis shall indicate all loads, load combinations, connections criteria, bracings and tie-down of the truss. Design output of the truss members, battens, connections, tiedown and wall plates, anchors, bracings, truss accessories, splicing and stiffeners where related to the analysis shall be included in the design report. (Refer to Appendix 3 of JKR 20601-0190-12) 7.7.2 All details in the construction drawings shall be sufficient to enable checking against the analysis and design report, by specifying and providing not limited to: the truss layout and configuration, timber grades, section properties of members, length of members in each truss configuration, properties of truss accessories, specification of fastener and
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/7 @HAKCIPTA JKR MALAYSIA anchor, tie-down and anchoring details and all types of connection details including the connection of all attachments to the trusses. 7.7.3 Technical specifications for fastener and anchor of which the design refers to shall also be submitted. Verification test certificate from an approved accredited laboratory on the technical parameter specified in the technical specifications shall be submitted upon request by the S.O. 7.8 Warranty 7.8.1 When a prefabricated timber roof truss system is used, the Contractor shall submit to the S.O. a warranty from the S.P. with the following provisions: (i) The products used are genuine and free from manufacturing defects; (ii) The prefabricated timber roof truss system is installed in accordance with the S.P.’s instructions, guidance and specifications that will deliver the specified level of performance; (iii) The warranty certificate shall cover a period of ten (10) years from the date of Certificate of Practical Completion against any defect or failure due to the installation and workmanship by the S.P.’s registered panel installer. 8. Glued Laminated Timber For Structures 8.1 General 8.1.1 This sub-section shall apply to the construction of all structures or parts of structures to be composed of glued laminated timber manufactured by gluing together individual pieces of dimensioned timber with or without steel joints and connectors. The work shall be carried out all in accordance with this specification and the lines, levels, grades, dimensions and crosssections shown in the Drawings and as required by the S.O. 8.1.2 All glued laminated timber building components shall be manufactured and assembled by licensed glued laminated timber manufacturers approved by the S.O. The Contractor shall provide the necessary documents relating to the proposed manufacturer such as valid licenses or other certificates to the S.O. for approval prior to the commencement of any manufacturing work. 8.1.3 All glued laminated timber members shall be manufactured in a factory which has quality control and quality assurance procedures in place as approved by the S.O. The S.O. reserves the right to visit the factory before giving any approval. 8.1.4 Prior to fabrication, the Contractor shall notify the S.O. on the dates of tests that shall be carried out. The S.O. may appoint a representative in the event the S.O cannot be present during the tests. The Contractor shall forward a copy of the test results jointly certified by the manufacturer for the S.O.’s acceptance and approval. 8.2 Material 8.2.1 Timber 8.2.1.1 Unless specified otherwise, the timber species used for the manufacturing of glued laminated timber components shall be selected from Malaysian tropical hardwoods that satisfy the
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/8 @HAKCIPTA JKR MALAYSIA requirements for strength classes D40 to D70 when graded to Hardwood Structural Grade (HSG) in accordance with BS 5756. A list of timber species that satisfies the requirements is shown in TABLE H8 of this specification. 8.2.1.2 The timber species should attain sufficient natural durability and resistance to decay and insect attack as stipulated in MS 544: Part 10. 8.2.1.3 Timber of single species or a mixture of species can be used in a glued laminated timber structural frame, provided that it is proven to be suitable for the manufacturing of glued laminated timber by the qualification test given in MS 758. Lamination of a glued laminated timber member shall not be of a mixture of different timber species. 8.2.1.4 The visual strength grading for all timber used for structural works should be visually graded based on the grading requirements of MS 1714: Specification for Visual Strength Grading of Tropical Hardwood Timber. The visual grading shall be carried out by timber graders registered with MTIB. 8.2.1.5 The Contractor is to supply all timber used in the manufacturing of glued laminated timber component to be of Hardwood Structural Grade as defined under MS 1714. 8.2.2 Moisture content for non treated timber 8.2.2.1 At assembly, the moisture content in every lamination shall be in the range of 8% to 15%. The range of moisture content of the laminations in a glued laminated timber member shall be not greater than 4%. 8.2.2.2 Method for the determination of the moisture content of timber is as stipulated in MS 837. 8.2.3 Moisture content for treated timber 8.2.3.1 At assembly, the moisture content in every lamination shall be in the range of 11% to 18%. The range of moisture content of the laminations in a glued laminated timber member shall be not greater than 4%. 8.2.3.2 Method for the determination of the moisture content of timber is as stipulated in MS 837. 8.2.4 Adhesive 8.2.4.1 The adhesive shall be capable of producing strong and durable joints, ensuring that the integrity of the bond is maintained throughout the intended lifetime of the structure. The adhesive shall meet the requirement for adhesive Type I and minimum Service Class 2 as stipulated in MS 758. 8.3 Laminations And Bonding 8.3.1 The individual laminations shall be end jointed to the final length before planing.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/9 @HAKCIPTA JKR MALAYSIA 8.3.2 Grooving of laminations to reduce the effect of cupping is permitted. In each lamination one groove is permitted in the middle part of the cross section, with a maximum width of 4 mm and a maximum depth of one third of the lamination thickness. Grooves in adjacent laminations shall be staggered by at least the thickness of the laminations. 8.3.3 When laminations are jointed by finger joints these shall be produced in conformity with BS EN 385 or equivalent Malaysian standard. 8.3.4 Where a lamination for horizontal glued laminated timber consists of two boards side by side and the edges are not bonded, the edge-joints in adjacent laminations shall be staggered laterally by at least the lamination thickness. For members used in Service Class 2 the outer lamination on each face shall be edge-bonded. For members used in Service class 3 the outer four laminations on each face shall be edge-bonded. 8.3.5 Laminations in vertical glued laminated timber to be used in Service Class 2 are not required to be edge-bonded, but the edge joints in adjacent laminations shall be staggered by at least one third of the board width. In members to be used in Service Class 3 the outer laminations shall be edge-bonded. 8.3.6 The laminations shall be planed or similarly finished before bonding. The planing shall be carried out no more than twenty four (24) hours before bonding, unless the species and the storage environment are such that unacceptable surface changes will not take place. With species that are difficult to bond, e.g. have high resin content or where the laminations have been treated with preservative, planing shall be carried out within 6 hours of bonding. It is the responsibility of the glued laminated timber manufacturer to qualify any procedures used and to determine the permissible delay between machining and gluing. 8.3.7 The maximum permitted deviation from the average thickness within a lamination length of 1 m is 0.2 mm. Where non-gap-filling adhesives are used the limit deviation shall no exceed 0.1 mm. The difference in thickness over the cross-sectional width of the lamination shall be less than 0.15% of the width and in no case exceed 0.3 mm. 8.3.8 At the time of bonding the surfaces of laminations shall be clean. The adhesive spread shall be uniform and in sufficient quantity in accordance with the recommendations of the adhesive manufacturer. 8.4 Cramping 8.4.1 The cramping arrangement shall ensure a uniform pressure over the glue line. The pressure shall be that specified in the adhesive manufacturer’s instructions for the adhesive used but in no case shall it be less than 0.7 N/mm2. The application of pressure at a suitable temperature shall be completed within the closed assembly time, when a continuous ‘squeeze out’ or ‘bead’ along the edge of each glue line shall be produced. 8.4.2 For curved members higher cramping pressures shall be applied and in such a way that the laminations can slide over each other in the lengthwise direction to avoid open glue lines. Sufficient pressure shall be maintained during cramping. Tightening up shall be carried out as necessary, and in all cases immediately after initial cramping.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/10 @HAKCIPTA JKR MALAYSIA 8.5 Preservative Treatment 8.5.1 Where the timber used is not naturally durable (as specified in TABLE H2), it shall be preservative treated. The treatment of timbers shall be as specified in sub-section 3: Treatment of Timber of this specification. 8.5.2 If any other preservative chemical is used, contractor shall provide necessary documents as may be required by the S.O to prove the efficiency of the chemical treatment. 8.6 Coating Specification 8.6.1 All glued laminated timber members shall be coated with a minimum of two coats of clear construction sealer. The sealer shall be applied in accordance with the manufacturer’s specification and to the S.O.’s approval. The Contractor shall rectify any damage to the coating after the erection has been carried out. The Contractor shall also provide details of the sealer used to the S.O. for record. 8.6.2 All glued laminated timber shall receive an additional coat of protective sealer before shipping/transport and shall be properly wrapped for protection during shipping/transport and erection. The wrapping should be left in place as long as possible until permanent protection from the weather is in place. 8.7 Submission Of Documentation 8.7.1 Prior to the manufacture and fabrication of the glued laminated timber, the Contractor shall provide two (2) copies of the following documents for the S.O.’s approval: (i) Particulars of the manufacturer (ii) Quality assurance programme of the manufacturing process (iii) Method statement for assembly, installation, handling and transportation (iv) Manufacturer’s fabrication drawings (v) Manufacturer’s assembly drawings (vi) Grading summary of timber to be used in the manufacturing of glued laminated timber, issued by timber grader certified by MTIB (vii) Results of qualification tests 8.8 Production Quality Control 8.8.1 The Contractor shall establish and maintain documented factory production control to ensure that the produced glued laminated timber members conform to the design requirement as demonstrated in the qualification tests. 8.8.2 From each work shift and each production line, a representative sample of end joint shall be drawn and tested in flatwise bending as described in BS EN 385. For each production line and shift the bending strength is acceptable is if one of the condition stated in sub-section 7.1.2 of MS 758:2001 is met. 8.8.3 Also, from each shift which gluing is carried out, one full cross-sectional specimen shall be taken for every press load or every 10 m3 of production. The specimen shall be cut from a cured glued laminated timber member produced during each work shift. If all tests for a three-month period satisfy
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/11 @HAKCIPTA JKR MALAYSIA the requirements the number of samples may be reduced to not less than half the number prescribed above. 8.8.4 The Contractor shall provide information on the glue line integrity, results of delamination tests and results of glue line shear test which shall not be less than as stipulated in MS 758. 8.8.5 The values for manufactured glued laminated timber shall not be less than the value for designed glued laminated timber. The values of the manufactured glued laminated timber properties shall be determined in accordance with MS 544: Part 2 or AS/NZS 4063. 8.9 Initial Qualification Tests 8.9.1 The Contractor shall be fully responsible to carry out qualification tests which shall be witnessed by the S.O. The Contractor shall carry out a qualification test whenever a new process or process change involving new adhesive, species combination, finger joint profile and lamination thickness. 8.9.2 Qualification tests 8.9.2.1 Unless otherwise stated and approved by the S.O. in writing, qualification tests shall be carried out on completed samples of glued laminated timber members before any actual manufacturing is allowed. 8.9.2.2 The tests shall cover the determination of characteristic strength of glued laminated timber member in bending, compression, tension and shear and characteristic modulus of elasticity in bending, and shall be determined by undertaking tests on completed 300 mm deep glued laminated timber members in accordance with AS/NZS 4063 and MS 758:2001. 8.9.2.3 The characteristic bending strength shall be obtained from flatwise bending test of the joint in the lamination. 8.9.3 The Contractor shall declare the manufactured glued laminated timber properties are as required by the designer and as shown in the drawings. The required properties to be declared are characteristic values for bending strength, modulus of elasticity, compression strength, shear strength and tension strength. 8.10 Handling And Installation 8.10.1 The Contractor shall submit the method statement of installation for the approval of the S.O. The method statement shall explain the sequence of erection of glued laminated timber and required safety measures. Glued laminated timber members shall be installed in accordance with the Assembly Drawings. 8.10.2 At all stages of construction, all glued laminated timber structural components shall be properly protected to prevent damage. 8.10.3 During on-site storage, glued laminated timber members shall be stored off the ground with spacer blocks spaced between members. The Contractor shall be responsible for the storage of glued laminated timber members properly at site to prevent bending, tipping or toppling of the members.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/12 @HAKCIPTA JKR MALAYSIA 8.10.4 Proper transit, storage and construction methods are required to avoid rapid changes in the moisture content of glued laminated timber members at site. If the storage at site takes longer period prior to installation than the Contractor shall ensure that, the wrapping of glued laminated timber members shall be cut on the underside to prevent the accumulation of water condensation. 8.10.5 During handling, correct lifting equipment shall be used. All glued laminated timber members must be protected from damages due to straps, chains and wire ropes. 8.10.6 During erection, glued laminated timber frame shall be properly braced that is permanent and temporary bracing to provide stability in accordance with the method statement prepared by the Contractor and approved by the S.O. 8.10.7 The Contractor shall ensure the accuracy of the prepared foundation, position of glued laminated timber structure, base plate and holding down bolts. Any discrepancies and deviations shall be remedied by the Contractor to S.O.’s approval before erection commences. 8.10.8 All end grains shall be protected from moisture or water accumulation by provision of permanent steel end capping. 8.11 Defects And Alteration 8.11.1 Glued laminated timber structures shall not have any debonding. Glued laminated timber structures affected by debonding shall be marked as ‘Rejected’ and removed from site. 8.11.2 No element of the glued laminated timber structures shall be cut, notched, detached from their connections or altered from its original condition after delivery to site without the prior written approval of the S.O. 8.11.3 Where defects exceeding the limits or permitted tolerances are detected, rectification works shall not be carried out unless with written approval of the S.O. 8.12 Warranty 8.12.1 The Contractor shall submit to the S.O. a performance warranty by the manufacturer to the Government on the performance of the glued laminated timber member against debonding which may occur during a period of ten (10) years from the date of practical completion. The terms of the performance warranty shall be as stipulated in APPENDIX H/1 and as approved by the S.O. 9. Carpentry Works 9.1 All carpentry shall be accurately set out in strict accordance with the Drawings and shall be framed together and securely fixed to the approval of the S.O. Timber framing shall be properly braced and checked, halve, screwed or bolted together as required. Longitudinal joints in plates, ridge, fascias, et cetera shall be formed over supports. Those timber members with lapped joints shall lap at least 150mm or twice the depth of the timber whichever is the greater. The brads, nails, screws, spikes, plugs, bolts, framing anchors and timber connectors shall be provided wherever necessary and as detailed. Other than those detailed, no joints are permitted in structural work unless prior permission is obtained from the S.O. No structural member shall be notched unless instructed by the S.O.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/13 @HAKCIPTA JKR MALAYSIA 9.2 For the carpentry works, timbers shall, as far as possible be in piece between continuing lengths. At corners, timbers shall be halved for materials of the same thickness, and sufficiently lapped for materials of different thicknesses. 10. Joinery Works 10.1 All doors, windows, louvers, screens and the like shall be constructed as shown in the Drawings. Frames shall be assembled at the commencement of the work and all members shall be carefully morticed and tenoned together but no wedging, pinning or gluing shall be done until the framing is prepared in readiness for immediate fixing. All doors, windows, louvers, screens and the like shall be properly stored on site. 10.2 Immediately before fixing in its final position, joinery shall be wedge and pinned by drawn hole pinning with 10 mm diameter Strength Group 1 and 2 timber dowels pins. The pins shall be left projecting until permission is given for flushing off. The methods of framing and putting together of all Works shall be approved by the S.O. before being executed. Any portions that warp, twist or develop any other defects shall be replaced before wedging up. All framed work shall be pinned before being framed together. 10.3 The choice of species for joinery should be based on working properties of timbers that is maximum percentage of shrinkage. 10.4 Jointing or connection for joinery that is nailed joint, screwed joint, coach screwed joint or bolted joint shall comply with MS 544 Part 5. 11. Timber Floor Finish 11.1 Unless otherwise shown in the Drawings, timber floors shall be constructed using 100 mm x 38 mm wrot, tongued and grooved boarding’s, well cramped up and secret nailed to each joist or batten with 62 mm wire nails. Floor boarding shall be in long lengths with splayed heading joints and no two adjacent joints shall occur over the same joist. On completion, the flooring shall be planed, sanded and all gaps sealed with an approved sealer. The floor shall then be cleaned off and unless otherwise specified, it shall be finished with three coats of approved polyurethane paint applied strictly in accordance with the manufacturer's instructions. 11.2 Wrot timber skirting shall be provided where shown and as detailed in the Drawings. Skirting shall be in long lengths with splayed heading joints and with mitres, returns and ends neatly cut and fitted and fixed to grounds. 11.3 Where engineered timber flooring are specified or shown in the Drawings, it shall be finished with high abrasive protective overlay and a moisture barrier balancing film to be applied on timber flooring backing in accordance with the manufacturer’s recommendations and S.O’s approval. 11.4 Timber strip and parquet flooring shall be as specified in SECTION K: PLASTERING, PAVING AND TILING WORKS. 12. Ceiling Timber Battens Where ceiling battens are used for ceilings, it shall be fixed to the frames with butt `V' joint using nails or screws. Asbestos-free cement flat sheets for ceiling shall be 5 mm thick fixed to frames using mitred profiled timber cover battens and brass screws with rounded edge
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/14 @HAKCIPTA JKR MALAYSIA beading. Ceiling panels shall be set out symmetrically from the centre line of the ceiling. Suspended ceiling systems shall be as specified in SECTION I: CEILING WORKS. 13. Timber Partitions Non-structural timber partitions shall be as specified under SECTION E: NONSTRUCTURAL WALL SYSTEM. 14. Fascia And Barge Boards Unless otherwise shown on the Drawings, fascia and barge boards shall be 25 mm thick wrot timber and supplied in long lengths. The boards shall be fixed in whole lengths and where joints are necessary, they shall be scarfed jointed and the joints shall occur only over the ends of roof framing members and mitred corners. Board, 250 mm wide and less shall be in one width and those deeper shall be formed by multiple of boards jointed together by tongue and groove and ‘V’ joint. 15. External Boarding 15.1 Unless otherwise shown on the Drawings, all external boarding shall be formed with 150 mm x 19 mm horizontal, vertical or diagonal boarding in wrot pressure-treated timber in long lengths and to the sectional profile as detailed in the Drawings. 15.2 Unless otherwise shown, lapping for plain weather boarding shall be 38 mm. Boarding shall be secured to the frames using 75 mm galvanized steel nails and in the case of plain weather boarding, nails shall not be driven through the lapped portions. The exposed bottom ends of all external vertical boarding shall be splayed inward at an angle of 30 degrees and treated with preservatives. 15.3 The timber boarding shall be cleaned off and unless otherwise specified, it shall be finished with approved polyurethane base paint with UV protection applied strictly in accordance with the manufacturer's recommendations. The strength grouping for external timber flooring shall be in accordance with the Properties of Malaysian Timber as shown hereinafter in TABLE H6. 15.4 For coastal environments and exposed weather applications subjected to airborne salts deposition, metal connectors and fasteners used shall comply with AS 3566 Class 4 and be certified as such by the supplier of fasteners and to the approval of the S.O. 15.5 All fixings and associated components shall be manufactured from compatible metals and coated conforming to ISO 9223 Category 4 (C4) and Category 5 (C5) environment. Flashings shall be made from the same material as the roofing sheets. 16. Staircase And Balustrades 16.1 Unless otherwise shown in the Drawings, the Contractor shall prepare Shop Drawings as required for the Works. Prior to the fabrication and installation works, the Contractor shall submit the Shop Drawings to the S.O. for approval. 16.2 The preferred sizes for modular staircase and stair openings shall comply with MS 1064: Part 3.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/15 @HAKCIPTA JKR MALAYSIA 17. Timber Solid Panel Doors 17.1 All fire doors shall be of the appropriate Fire Resistance Period (FRP) in accordance with the Ninth Schedule of the Uniform Building By-Laws. 17.2 All fire doors including frames shall be constructed to a specification of the relevant FRP in accordance with MS 1073 and shall be tested by a laboratory, approved and certified by DGFR and have obtained a Product Certification Scheme from an accredited certification body. 17.3 All double leaf doors with rebated meeting stiles shall be provided with coordinating device so as to fit fully within the door openings with a gap of not more than 3mm between the frame and the edge of the door when closed. 17.4 Where shown on the Drawings, approved vision panel of suitable size shall be incorporated in the Fire Rated Door. 17.5 Flush doors shall generally comply with MS 1506: Specification for Wooden Door with plywood facing and strength group 1 and strength group 2 timber lipping, mitred around all edges. The plywood and strength group 1- 4 shall in all respects with the Specifications mentioned hereinbefore. 17.6 The preferred sizes for modular door sets shall comply with MS 1064: Part 4 and for modular windows shall comply with MS 1064: Part 5. 18. PVC Doors 18.1 Unless otherwise specified in the Drawings, PVC doors shall be of strong impact resistance and waterproof/moisture resistant laminated timber finish on both sides. Unless otherwise shown in the Drawings, the door shall be 38 mm thick. 18.2 PVC toilet doors shall be of full single panel of flush type. It shall be 100% waterproof, strong impact resistance and not be discoloured easily. Unless otherwise shown on the Drawings, the door shall be 38 mm thick. PVC door shall be delivered to the site complete with ironmongery as listed in the TABLE H7. 19. Products And Materials 19.1 Plywoods 19.1.1 Unless otherwise specified, plywood used for interior and exterior purposes other than for formworks and temporary works shall be manufactured with Moisture Resistant (MR) bond and Weather and Boil Proof (WBP) bond respectively in compliance with MS 228. Boards which are to be painted or varnished shall be properly sanded down and holes and crevices filled with approved wood putty or filler. 19.1.2 Plywood intended for use as shuttering board shall be of the Weather and Boil Proof (WBP) type. 19.1.3 Plywood intended for structural use, shall be of Malaysian Basic Structural Grade (MBSG) rated or equivalent and shall comply with MS 544: Part 4. 19.1.4 Plywood to be used in marine environment or severe wet conditions shall be in accordance with MS 544: Part 4.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/16 @HAKCIPTA JKR MALAYSIA 19.2 Blockboard 19.2.1 Blockboard shall comply with MS 1123. Fixing of blockboards shall generally be in accordance with the manufacturer’s instructions. 19.2.2 Boards which are to be painted or varnished shall be properly sanded down and holes and crevices filled with approved wood putty or filler to the approval of the S.O. 19.3 Chipboards 19.3.1 Chipboards shall be of the type manufactured from wood chips or shavings combined with a thermosetting synthetic resin glue binder bonded and hotpressed together and complying with MS 1036 for medium density chipboard. The type and quality of boards shall be approved by the S.O. The boards shall be fixed as detailed in the Drawings with a minimum edge distance of 12 mm for nailing. 19.3.2 Boards which are to be painted or varnished shall be properly sanded down and holes and crevices filled with approved wood putty or filler to the approval of the S.O. 19.4 Fibre Building Boards 19.4.1 All fibre building boards namely, Hard Board, Medium Board and Medium Density Fibre Board (MDF) shall comply with MS 1429 and MS 1912. The type and quality of Fibre building boards shall be as approved by the S.O. Perforated hardboards shall be not less than 3.2mm thick with maximum of 4.8mm perforation at 19mm centers unless otherwise stated in the Drawings. 19.4.2 All fibre building boards shall be fixed strictly in accordance with the manufacturer’s instruction. Unless otherwise detailed in the drawings, the ceiling boards shall be butt and `V’ jointed. 19.5 Composite Boards 19.5.1 The type and quality of composite boards shall be as approved by the S.O. and shall be fixed strictly in accordance with the manufacturer’s instruction. 19.5.2 Fixing of timber base composite boards shall comply with the manufacturer’s instructions. Panels which are to be painted or varnished shall be properly sanded down and holes and crevices filled with approved wood putty or filler to the satisfaction of the S.O. Panels which are for wet prone area, shall comply with MS 1787. 19.6 Woodwool Slabs 19.6.1 Woodwool slab shall comply with MS 1036 and shall be of the type and quality as approved by the S.O. Unless otherwise specified in the Drawings, the slab shall be laid with its length at right angles to support, fixed strictly in accordance with the manufacturer’s instruction. 19.7 Wood Cement Boards 19.7.1 Wood cement boards shall comply with the requirements of MS 934 or MS 544:Part 4. In fixing, the board must be supported on all four edges and at immediate positions at centres not exceeding 610 mm. Joints between
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/17 @HAKCIPTA JKR MALAYSIA boards shall occur on centers of supports. Minimum edge distance shall be 20 mm. 19.7.2 Boards which are to be painted shall be lightly sanded and any dust shall be removed from the surface with a piece of clean coarse cloth. Any filling compounds used shall be alkali-resistant. Fixing of the board shall be in accordance with the manufacturer’s instructions. 19.8 High Pressure Laminate (HPL) 19.8.1 High Pressure Laminate is a thermoset paper/plastic composite, where decorative papers impregnated with melamine are consolidated over phenolic-impregnated craft papers at high temperature and pressure to form a homogenous laminate. Unless otherwise specified, HPL shall comply with MS 1787: Part 1-15 for durability. 19.9 Wood Plastic Composite (WPC) 19.9.1 WPC shall be made from minimum 70% rice husk and balance recycled HDPE. WPC solid decking system shall be of 145 mm (w) x 25 mm (t) fixed onto 300 mm c/c on Suspended Leveling System with hot dipped zinc-aluminium alloy coated steel with a minimum coating mass of AZ150 to AS/NZS 1397-2002 steel sheet grade G300 on to flat concrete slab with ENSS03 stainless steel clip, all in accordance with manufacturer's recommendation and S.O’s approval. 20. Ironmongery 20.1 Unless otherwise shown on the Drawings, the Contractor shall supply and fix all ironmongery as listed in the TABLE H7 attached hereinafter, complete with fixing screws of the same material and finish. 20.2 Proper sockets shall be provided for all bolts to fix flush in floors, cills and door and window frames. Each lock shall be provided with three keys and no locks shall have identical keys, unless specifically required by the S.O. 20.3 All doors, windows, gates, joinery, et cetera, shall be provided with anti-rust heavy duty ironmongery appropriate for its function, complete with fixing screws of the same material and finish. 20.4 All doors shall be provided with door-stops, door-closers and other appropriate ironmongery where applicable or as shown on the Drawings. 20.5 The submission of ironmongery set shall have been tested and certified by SIRIM QA Services Sdn. Bhd. or approved equivalent. 21. Built-in Furniture 21.1 General 21.1.1 Built-in furniture shall be constructed and properly framed in wrot timber as shown on the Drawings. Where fittings are not to be painted, unless otherwise specified, they shall be stained and varnished as described under SECTION O: PAINTING WORKS. 21.1.2 All interior furniture works shall be coordinated with mechanical and electrical works and as approved by the S.O.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/18 @HAKCIPTA JKR MALAYSIA 21.1.3 All built-in furniture materials shall be protected wrapped in strong waterproof paper or polythene/polyethylene (PE) sheeting to protect against damp and scratching during transportation from the factory. The wrapping shall not be removed until installation starts. 21.1.4 Built-in furniture materials shall be unloaded and handled in a manner which will not result in damage, deformation or contamination to the built-in furniture materials. 21.1.5 Built-in furniture materials and loose furniture delivered to the site shall be properly stored by arranging them in stacks, keeping them properly wrapped and stored under cover if they are not used or assembled immediately. 21.2 Materials 21.2.1 All composite wood products, such as Medium Density Fibreboard (MDF) shall comply with MS 1429 and the use of Particleboards shall comply with MS 1912. 21.2.2 The formaldehyde emission for all composite wood products and wood based panels shall comply with MS 1787. 21.2.3 Laminates used in composite wood products shall comply with MS ISO 4586. 21.2.4 Unless otherwise specified in the Drawings or Specification the resin used in composite wood products shall be phenol-formaldehyde (PF), melamineurea-formaldehyde (MUF), melamine-urea-phenol-formaldehyde (MUPF), polymeric diphenyl methane diisocyanate (PMDI) or polyurethane (PU). 21.2.5 Adhesive for wood and composite wood products shall be phenolformaldehyde resin adhesive classified as weather-proof and boil-proof, in accordance with MS 908. 21.2.6 Thermoplastic fittings, such as handles and accessories, where applicable, shall be polyamide (PA) or polypropylene (PP). Thermoplastics shall comply with MS 2324. 21.2.7 Solid surface shall be non-porous, homogenous, stain and chemical resistant, fire resistant and with a composition of acrylic polymer, aluminium trihydrate filler and pigment. 21.2.8 Where timber species are used it shall be constructed and properly framed in wrot timber as detailed in the Drawings. 21.3 Component Assemblies 21.3.1 Unless otherwise stated in the Drawings, steel frames, where applicable, shall be square and flat with mitred, welded corners. 21.3.2 Screws shall have countersunk heads which shall comply with MS ISO 1482. 21.3.3 Hinges shall have a spring mechanism to lock the door in a close or open position, remain completely hidden behind the door and enable the door to open to 120 degrees.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/19 @HAKCIPTA JKR MALAYSIA 21.3.4 Drawer slides shall be epoxy powder coated metal, mounted from the bottom and provided with friction bearing-mounted nylon rollers. 21.3.5 Unless otherwise specified, drawers shall have the ‘soft-close’ and/or ‘positive-close’ functions, which are mechanisms enabling drawers to quietly shut, or which fully shut after being only partially pushed. Drawers can be lifted up and removed easily for cleaning purposes. 21.3.6 All drawers, unless otherwise specified, shall have ¾ extension and be able to sustain up to 25 kg. Kitchen cabinet drawers shall have full extension and be able to sustain up to 45 kg, which is suitable for large pots, pans and/or woks. 21.3.7 Drawers for storing small kitchen cutlery shall have thermoplastic inserts with subdivided compartments. 21.3.8 Drawer handles and cabinet pulls shall be ergonomic. Thermoplastic handles and pulls shall recess into the door panels. Metal handles and pulls that extrude shall either be epoxy powder coated and/or anodized aluminium. 21.3.9 Solid surface worktops and countertops shall be 12 mm thick, 600 mm deep with backsplash 100 mm high, with integral bowl, where applicable. Actual dimension of solid surface worktops shall be measured at site. Upon installation of the solid surface worktops, it shall be polished and set level to S.O’s approval. 21.3.10 Unless otherwise specified, worktops and countertops shall have a flat edge finishing at the perimeter. Worktops and countertops shall be provided with holes and cut-outs for plumbing components, where applicable. All joints shall be inconspicuous and use the manufacturer’s recommended adhesive and silicone sealant. 21.3.11 Built-in furniture sliding doors shall be fitted with guides or similar fittings, rollers or ball bearings, pull handles, stops and locking mechanisms. 21.3.12 Cabinet doors with glass inserts and/or panels shall be constructed with proper support to ensure that the glass remains securely fixed. Support shall be bedded in mastic with all interstices completely filled. 21.3.13 Glass inserts and/or panels and glass shelves, where applicable, which needs to be structurally strong shall be tempered glass. Tempered glass shall comply with MS 1498. 21.3.14 Cupboards, wardrobes, cabinets and shelves shall have peg-holes on either side internally, allowing for adjustable shelf height. Adjustable legs, if applicable, shall be of a proprietary system type as approved by the S.O.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/20 @HAKCIPTA JKR MALAYSIA TABLE H1: SCHEDULE OF TIMBER GROUPING AND USAGE No Typical Usage Species 1 2 3 4 5 6 7 8 9 10 Structural frames 1.1 All columns, stilts and beams Bearer to water tank Staircase and component elements 3.1 Stinger & treads/Riser 3.2 Trimmer beams 3.3 Balustrades, nosing and handrails Flooring 4.1 Floor bearers, joists and strutting for joists 4.2 Floor boardings 4.3 Gymnasium floor boarding 4.4 Parquet flooring 4.5 Skirtings Walling 5.1 Wall and partition framings 5.2 External wall boardings 5.3 Internal wall boardings Roof structures 6.1 Roof trusses, rafters, purlins, wall plates and other roof members 6.2 Fascia boards Ceiling frames 7.1 Ceiling joists and spacers 7.2 Cover battens to joints of ceiling sheets 7.3 Ceiling strips and soffit battens Door and window frames 8.1 All doors, windows, vent frames, grounds, stops and architraves 8.1.1 External usage 8.1.2 Internal usage Furniture fitting 9.1 Built-in fittings and furniture in general 9.1.1 Carcassing 9.1.2 Lining/Panelling 9.1.3 Top 9.2 Workshop furniture top Beading fillets and edgings in general SG4 SG5 SG5 SG5 SG5 SG5 SG5 SG4 SG5 SG5 SG5 SG5 SG7 SG4 SG5 SG5 SG7 SG7 SG5 SG7 SG5 SG7 SG5 SG5 SG5
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/21 @HAKCIPTA JKR MALAYSIA TABLE H2: SCHEDULE OF TIMBER SPECIES IN ACCORDANCE WITH STRENGTH GROUPING (S.G) S.G 1 S.G 2 S.G 3 S.G 4 S.G 5 S.G 6 S.G 7 A) Naturally Durable Balau Belian Bekak Giam Jati Bitis Mata Ulat Delek Malabera Tembusu Cengal Kekatong Keranji Merbau Penaga Resak B) Requiring Treatment Dedaru Agoho Berangan Alan Bunga Bayur Ara Kempas Balau Merah Dedali Babai Damar Minyak Batai Merbatu Kelat Derum Balik Angin Bopeng Durian Geronggang Mertas Kembang Semangkuk Kapur Bintangor Jelutung Laran Kulim Kasai Brazil Nut Jenitri Pelajau Pauh Kijang Keruntum Gerutu Jongkong Pulai Penyau Mempening Kundur Kasah Sesenduk Perah Meransi Kedondong Macang Terentang Petaling Meranti Bakau Keledang Medang Ranggu Merawan Keruing Melantai/ Kawang Ru Merpauh Ketapang Meranti Merah Muda Surian Batu Nyalin Kungkur Meranti kuning Tualang Perupuk Melunak Mersawa Punah Mempisang Sengkurat Rengas Mengkulang Terap Simpoh Meranti Merah Tua Meranti Putih Nyatuh Penarahan Petai Ramin Kayu Getah Sengkuang Sepetir Tetebu Notes : 1. For naturally durable timbers, sapwood should be excluded. If sapwood is included, preservative treatment is necessary.(Source: MS 360:1986) 2. For timber requiring treatment, they should be amenable to preservative treatment.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/22 @HAKCIPTA JKR MALAYSIA TABLE H3: SCHEDULE OF MOISTURE CONTENTS (M.C) OF TIMBER FOR VARIOUS POSITIONS IN BUILDING Application Maximum M.C. At Time Of Installation For Non AirConditioned Application Maximum M.C. At Time Of Installation For Airconditioned Application (Kiln-Dried Timber) Structural Components Columns, beams, bearer, studs, joists, ties and struts 30% (Thickness >100mm) 25% (Thickness <100mm) Not applicable Not applicable Roofing Rafters, ties, struts, purlins and bracing 25% Not applicable battens 25% Not applicable Staircase stringers, treads, trimmer beam and handrail 19% 12% balustrades 19% 12% Flooring floor boarding and parquetry 19% 12% skirtings 19% 12% Walling wall, partition framing 19% 12% external wall boardings 19% Not applicable internal wall boardings 19% 12% fascia boards 19% Not applicable Ceiling Frames cover battens to joints of ceiling sheets 25% Not applicable ceiling strips and soffit battens 19% 12% Door & Window Frames door, window and vent frames including their stops and grounds 19% 12% door leaves, window and vent sashes 19% 12% Furniture built in fittings, furniture generally 19% 12% workshop furniture 19% 12% science laboratory tops 19% 12% Beading fillets and edgings generally 19% 12%
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/23 @HAKCIPTA JKR MALAYSIA TABLE H4: NATURAL DURABILITY1 CLASSIFICATION OF PENINSULAR MALAYSIA TIMBERS FOR GROUND CONTACT Class 1 Class 2 Class 3 Class 4 Very durable (More than 10 years) Durable (5 to 10 years) Moderately durable (2 to 5 years) Not durable (Less than 2 years) Chengal Balau Agoho2 Rengas Api-api Nyatoh6c Giam Bekak Balau, red Sepetir Ara Perapat Penyau Bitis Bakau Tumu Berangan Perah Resak Kasai Bungor Tualang Balek angin Perupok Tempinis Kapur 4a Derum Telor buaya Bintangor Petai Nyatoh6a Dedali Pelong Batai Podo Merbau Dedaru Kerukup Bayur Pulai Mersawa Delek Brazil nut2 Damar minyak Putat Merbau lalat Dungun Keruntum Dungun paya Ramin Delinsem2 Acacia3 Keruing8a,b,c Durian Samak Malabera Pauh kijang Keledang9a,b Engkabang Sena Medang5a,b Kapur4b Mata ulat Jelutong Sawa luka Penaga Kelat Medang5c Gaham badak Sepul Pelajau Kembang semangkok Meranti,7a,b,c,d,e dark red Geronggang Sesenduk Pelawan Kempas Mempening Gerutu Sentang3 Ranggu Keranji Mengkulang Gading Simpoh Surian batu Gegatal Meransi Gapis Sempilor Teak Kulim Merbatu Meranti bakau Terentang Tembusu Kungkur Merawan Meranti, light red Tapus Leban Merbau kera Jenitri Terap Nyalas Meranti, white Jongkong Tuai Pauh kijang Mertas Kasah Tulang daing Petaling Nyatoh6b Kekabu Ketapang Punah Nyireh Kawang Rubberwood Nipis kulit Keledang9c,d,e Pine3 Kapur4c Yemane3 Kayu malam Coconut Kedondong Tengkurung Kungkur Penarahan Meranti, yellow Keruing8d,e Laran Meranti tembaga Lelayang Machang Lilin Medang5d, e Limpaga2 Mempisang Ludai Merbatu Merpauh Melantai Minyak berok NOTE. For reference to source of data see Bibliography * The results were obtained from the graveyard test from the Forest Research Institute Malaysia test site. 1 All samples taken from heartwood area except for the timber which their sapwood and heartwood cannot be differentiated. Timber of the same species but from different regions in Malaysia may have different durability classifications. 2 The timber is not Peninsular Malaysia origin. 3 Plantation timber, originally from other countries. 4a Dryobalanops aromatica 4b Dryobalanops rappa 4c Dryobalanops oblongifolia 5a Alseodaphne insignis 5b Dehaasia nigrescens 5c Cinnamomum porrectum 5d Litsea firma 5e Litsea megacarpa 6a Palaquium impressinervium 6b Palaquium maingayi 6c Palaquium gutta 7a Shorea uliginosa 7b Shorea platyclados 7c Shorea pauciflora 7d Shorea singkawang 7e Shorea curtisii 8a Dipterocarpus sublamellatus 8b Dipterocarpus crinitus 8c Dipterocarpus verrucosus 8d Dipterocarpus kerrii 8e Dipterocarpus lowii 9a Artocarpus interger 9b Artocarpus lanceifolius 9c Artocarpus dadah 9d Artocarpus rigidus 9e Artocarpus heterophyllus
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/24 @HAKCIPTA JKR MALAYSIA TABLE H5: NATURAL DURABILITY1 CLASSIFICATION OF SARAWAK TIMBERS FOR GROUND CONTACT Class 1 Class 2 Class 3 Class 4 Very durable (More than 10 years) Durable (5 to 10 years) Moderately durable (2 to 5 years) Not durable (Less than 2 years) Belian Kapur bukit Baru Kapur paji Acacia Bindang Penyau Kapur kelansau Bedaru Kapur paya Alan Geronggang Selangan batu2 Kawi Kandis Luis/Chengal pasir Asam Jadap Luis Kasai Medang luis kasar Bajan Jelawai Lun runcing Leban Mengkulang Bayur Jelutong Mertama Nyireh Mersawa kunyit Bengang Kayu cina Nyatoh3 Pelajau Petai belalang Benuah Kayu malam Rhu Resak membangun Sempilor Binuang Kelampayan Selangan batu4a Seladah4b, c Bintangor Kembang semangkok Selumar Bintawak Kepayang babi Selunsur Dungun Keranji Tapang Durian Keruing Urat mata Empenit Ketiau Entuyut Kumpang Litoh Legai Medang Meranti, light red Menggris Yellow flame Mersawa paya Meranti, yellow Minggi Mergasing Ngilas Peran/bilat Nyatoh5a, b Segera Pelai Seladah6a, b Perah Sentang Perupok Simpoh Tampoi Petai Tekalong Pitoh Teruntum Ubah Ramin Upi Resak paya Sawih 1 The results were obtained from the graveyard test from Oya Road, Sibu test site. All samples taken from heartwood area except for the timber which their sapwood and heartwood cannot be differentiated. Timber of the same species but from different regions in Malaysia may have different durability classifications. 2 Shorea pulricostata 3 Palaquium rivulare 4a,b,c Shorea flava, S. laecis, S. spp 5a,b Dacryodes incurvata, Santira laevigata 6a,b Palaquium pseudorostratum, Ganua motleyana
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/25 @HAKCIPTA JKR MALAYSIA TABLE H6: PROPERTIES OF MALAYSIAN TIMBER Heavy Hardwoods No Species Strength Tangential Movement Air-dry density (kg/m3 ) 1 Balau Very strong 2.1 – 2.5% 850-1155 2 Merbau Strong 2.1 – 2.5% 515-1040 3 Red Balau Strong 2.1 – 2.5% 800-880 Medium Hardwoods 1 Kelat Strong 2.1 – 2.5% 495-1010 2 Kempas Very strong > 3.1% 770-1120 3 Keruing Strong 2.6 – 3.0% 3.1% 690-945 4 Mengkulang Strong 2.1 – 2.5% 625-895 5 Merpauh Strong 1.5 – 2.0% 640-880 Light Hardwoods 1 Bintagor Moderately strong 1.5 – 2.0% 495-865 2 Dark Red Meranti Moderately strong < 1.5% 1.5 – 2.0% 560-865 3 Gerutu Moderately strong 2.6 – 3.0% 575-880 4 Mersawa Moderately strong 2.1 – 2.5% 515-735 5 Yellow Meranti Moderately strong 1.5 – 2.0% 575-735 ( Source: Choo KT, Gan KS & Lim SC, Movement of Seasoned Timber in Service, FRIM Technical Information Handbook No 18 )
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/26 @HAKCIPTA JKR MALAYSIA TABLE H7: SCHEDULE OF IRONMONGERY Type of Doors, Windows etc. Ironmongery for each type of doors, windows etc. 1. Single Leaf Door 1.1. Plywood Flush Door a) 3 Nos. of 102 mm x 76 mm x 2 mm galvanised steel hinges with nylon rings. b) 1 No. upright 3 lever mortice lockset with satin chrome lever handle furniture of approved manufacture with 2 Nos. chrome plated keys of different serial number for each building. c) 1 No. stainless steel door stopper. 1.2. Timber Panelled Door a) 3 Nos. of 102 mm x 76 mm x 2 mm stainless steel hinges with nylon ring. b) 1 No. medium duty cylindrical lockset, 5 pin tumbler with knob and rose of stainless steel with hairline finish complete with 3 Nos. nickle-plated brass keys of different serial number for each building. c) 1 No. stainless steel door stopper. 2. Double Leaf Door 2.1. Plywood Flush Door a) 6 Nos. 102 mm x 76 mm x 2 mm stainless steel hinges with nylon rings. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder. c) 1 No. solid brass mortice lock rebated part. d) 1 Set of 150 mm and 300 mm Flush Bolt Lever Type Stainless Steel. e) 1 No. dust socket medium. f) 2 Nos. stainless steel door stopper. 2.1. Timber Panelled Door a) 6 Nos. 102mmx76mmx2mm stainless steel hinges with nylon rings. b) 1 No. cylindrical lock stainless steel, 5 pin tumbler with knob and rose of stainless steel with 3 nos nickle-plated brass keys c) 1 No. solid brass mortice lock rebated part. d) 1 Set of 150mm and 300mm Flush Bolt Lever Type Stainless Steel. e) 1 No. dust socket medium. f) 2 Nos. stainless steel door stopper. 3. PVC Door To Toilet /Bathroom Cubicles a) 3 Nos. 102 mm x 76 mm x 2 mm stainless steel hinges with nylon rings. b) i) Residential Quarters - 1 No. stainless steel cylindrical lock with privacy locking device operated by turn from inside and knob handle. ii) Non-residential buildings - 1 No. stainless steel indicator bolt toilet. c) 1 No. hat & coat hook stainless steel. 4. Single Leaf Fire Rated Door 4.1. Standard size of 800 mm x 2100 mm ½ hr & 1 hr fire rated door (Metal Frame & Timber Door) a) 3 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. stainless steel door stopper. d) 1 No. door closer. e) 1 No. floor spring for double swing door. 4.2. Standard size of 900 mm x 2100 mm ½ hr & 1 hr fire rated door (Metal Frame & Timber Door) a) 3 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. stainless steel door stopper. d) 1 No. door closer. e) 1 No. floor spring for double swing door. 4.3. Standard size of 900 mm x 2100 mm 2 hr fire rated door (Metal Frame & Timber Door) a) 4 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. stainless steel door stopper. d) 1 No. door closer. e) 1 No. floor spring for double swing door. f) 2 Nos. of ball bearings. g) 1 No. of heavy duty stainless steel latch with 75 mm long backset. 5. Double Leaf Fire Rated Door 5.1. Standard size of 1200 mm x 2100 mm a) 4 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. solid brass mortice lock rebated part. d) 1 Set of 150 mm and 300 mm Flush Bolt Lever Type Stainless Steel. e) 1 No. dust socket medium. f) 2 Nos. stainless steel door stopper. g) 2 Nos. automatic door closer of hydraulically spring operated type (for swing doors) or of wire rope and weight type (for sliding doors). h) 2 Nos. floor spring for double swing door.
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/27 @HAKCIPTA JKR MALAYSIA Type of Doors, Windows etc. Ironmongery for each type of doors, windows etc. 5.2. Standard size of 1800 mm x 2100 mm a) 6 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. solid brass mortice lock rebated part. d) 1 Set of 150 mm and 300 mm Flush Bolt Lever Type Stainless Steel. e) 1 No. dust socket medium. f) 2 Nos. stainless steel door stopper. g) 2 Nos. automatic door closer of hydraulically spring operated type (for swing doors) or of wire rope and weight type (for sliding doors). h) 2 Nos. floor spring for double swing door. 5.3. Standard size of 2400 mm x 2100 mm a) 8 Nos. 127 mm x 89 mm x 2.5 mm heavy duty stainless steel hinges. b 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body with single key thumb turn cylinder approved by DGFR. c) 1 No. solid brass mortice lock rebated part. d) 1 Set of 150 mm and 300 mm Flush Bolt Lever Type Stainless Steel. e) 1 No. dust socket medium. f) 2 Nos. stainless steel door stopper. g) 2 Nos. automatic door closer of hydraulically spring operated type (for swing doors) or of wire rope and weight type (for sliding doors). h) 2 Nos. floor spring for double swing door. 6. Single Leaf Fire Escape Door a) 3 Nos. of 127 mm x 89 mm x 2.5 mm thick heavy duty stainless steel hinges. b) 1 complete set of approved make fire rated panic bolts. 7. Double Leaf Fire Escape Door a) 6 Nos. of 127 mm x 89 mm x 2.5 mm thick heavy duty stainless steel butt hinges. b) 1 complete set of approved make fire rated panic bolts. 8. Glass Door a) 1 Set Floor Spring. b) 1 Set Patch Fitting, door bottom, door top, lock clamp, over panel. c) 1 pair Pull handle 600 mm. 9. Aluminium Door a) 3 Nos. 102 mm x 76 mm x 2 mm stainless steel hinges with nylon rings. b) 1 Set Hollow Lever Handle Stainless Steel Mortice Lock Body deadlock with single key thumb turn cylinder. 10. Kitchen Cabinet Door/ Workbench a) Galvanised steel continuous ‘piano’ butt hinges. b) 1 No. 100 mm aluminium ‘D’ handle. c) 1 No. bales catch. d) 1 No. galvanised steel cupboard lock in satin chrome finish. 11. Wardrobe a) 3 Nos. of 75 mm brass butt hinges (per door leaf). b) 2 Nos.100 mm anodised aluminium barrel bolt (for double leaf doors) c) 1 No. 100 mm aluminium ‘D’ handle. d) Chromium plated steel clothes hanger rail. e) Steel cylinder cupboard lock in satin chrome finish. 12. Drawer a) 1 No. steel cylinder drawer lock in satin chrome finish. b) 1 No.100 mm aluminium ‘D’ handle. 13. Sliding and Folding Door/ Partition a) Top or bottom running set sliding and folding door gear, complete with tracks, channel, brackets, roller guides, hangers and all necessary butt hinges, flush bolts and flush door pulls, etc. as recommended by the manufacturer. b) 1 No. upright 3 lever rebated mortice lockset for sliding and folding door with satin chrome lever handle furniture with 2 Nos. keys of different serial number for each building. 14. Straight Sliding Door a) Top or bottom running set straight sliding door gear complete with tracks, brackets, hangers, roller guides, channels, door stops, flush brass bolts, brass flush pull etc. as recommended by the manufacturer. b) 1 No. upright 3 lever mortice lockset with satin chrome finish for straight sliding door with 2 Nos. keys of different serial number for each building. 15. Timber Casement Window a) 2 Nos. 400 mm long approved electro-galvanised steel friction hinges. b) 1 No. approved brass with satin chrome finish combination handle and fastener. 16. Top Hung Casement Timber Window. a) 2 Nos. 750 mm long approved electro-galvanised steel friction hinges. b) 1 No. approved brass with satin chrome finish automatic locking fastener. 17. Top Hung Vent/Sashes a) 2 Nos. 400 mm long approved electro-galvanised steel friction hinges. b) 1 No. approved brass with satin chrome finish automatic locking fastener
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/28 @HAKCIPTA JKR MALAYSIA TABLE H8: TIMBER SPECIES FOR THE MANUFACTURING OF GLUED LAMINATED TIMBER COMPONENTS Standard names Strength class Mengkulang D40 Merbau Keruing D50 Kapur Kempas D60 Balau D70
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/29 @HAKCIPTA JKR MALAYSIA APPENDIX H/1 GLUED LAMINATED TIMBER PERFORMANCE WARRANTY (SPECIMEN) 1.0 Coverage of Performance Warranty We …..……………………………………………….. the glued laminated timber Manufacturer hereby warrant that for a period of ten (10) years from the date of Practical Completion, the glued laminated timber system shall not be affected by the following defect: a) Debonding This condition occurs when the individual laminations of a glued laminated timber member become separated. 2.0 Procedure for Claims i) Any defect claims shall be made in writing and delivered by post or by hand to the Manufacturer. ii) A technical team from the Manufacturer will be dispatched to evaluate the nature of the claim. Should our findings conclude the defects as within the scope of warranty, then the Manufacturer shall make good such defects. iii) Should the Manufacturer’s technical team conclude that the defects falls outside the scope of the warranty, the Manufacturer shall not be held responsible for the claim. iv) Should the Government disagree with the conclusion of the technical team pertaining to the defects in particular, then an independent third party competent in such technical evaluation shall be appointed to investigate the disputed defects. v) The appointment of independent third party competent in such technical evaluation shall only be appointed upon the mutual agreement between the Government and the Manufacturer. vi) The findings of the third party shall be conclusive and mutually accepted by the Government and the Manufacturer. vii) If the findings of the independent third party are within the coverage of this performance warranty, all cost shall be borne by the Manufacturer or otherwise such cost shall be borne by the Contractor. viii) All claims for the defects must be received by the Manufacturer not later than fourteen (14) days from the expiry of the warranty period. MANUFACTURER ………………………………….. Company Stamp …………………………………….. ……………………………………… ………………………………….. Signature Name: Date: WITNESS ………………………………….. Company Stamp …………………………………….. ……………………………………… ………………………………….. Signature Name: Date:
JKR MALAYSIA SECTION H : TIMBER, JOINERY AND IRONMONGERY WORKS No. Dokumen No. Keluaran No. Pindaan Tarikh Muka Surat : : : : : JKR 20800-0183-14 01 00 29 Januari 2014 H/30 @HAKCIPTA JKR MALAYSIA BLANK PAGE
TABLE OF CONTENTS SECTION I: CEILING WORKS PAGE @HAKCIPTA JKR MALAYSIA 1. General 2. Submittals 3. Setting Out 4. Acoustic Requirements 5. Materials And Ceiling Components 6. Ceiling Suspension System I/1 I/1 I/1 I/2 I/2 I/5